Answer:The pharynx, larynx, trachea and bronchi are four parts of the respitaory system that air comes into the body. the role that they play in respiration is that they bring oxygen into our blood stream and then help push out carbon dioxide into the atmosphere
ezra fits aka Mr.fitz ( Pretty Little Liars)
The four parts of the respiratory system through which air enters the body are the nose, pharynx, larynx, and trachea.
Parts of the respiratory system?Nose: Air enters the body through the nostrils, where it is filtered, humidified, and warmed. Tiny hair-like structures called cilia trap particles, preventing them from entering the lungs.
Pharynx: The air then moves to the pharynx, a passage connecting the nasal cavity and the mouth. It serves as a common pathway for both air and food, directing air into the trachea and food into the esophagus.
Larynx: The larynx, also known as the voice box, contains the vocal cords. It prevents food and liquids from entering the trachea during swallowing and produces sound when air passes over the vocal cords.
Trachea: Air travels down the trachea, a tube reinforced with C-shaped cartilage rings that prevent collapse. The trachea branches into bronchi, leading to the lungs.
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how do resistance and resilience contribute to biodiversity in an ecosystem?
President Ford’s attempt to move beyond the Watergate scandal
Resistance is an ecosystem's capacity to maintain equilibrium despite disturbances, while resilience is the speed at which an ecosystem recovers post-disturbance. High biodiversity enhances both properties, ensuring greater ecosystem productivity and stability as well as better recovery from disruptions.
Explanation:Resistance and resilience are key properties that contribute to the biodiversity and stability of an ecosystem. Resistance refers to the ability of an ecosystem to remain at equilibrium and withstand disturbances. When an ecosystem is resistant, its various species can survive challenges such as climatic changes, invasive species, and natural disasters without undergoing significant loss in biodiversity or function.
Resilience, on the other hand, measures how quickly an ecosystem can recover after a disturbance. A higher level of biodiversity typically leads to increased ecosystem productivity and stability, enabling an ecosystem to bounce back more rapidly from disruptions. This can be supported by the principle of biotic resistance, where more diverse communities tend to be less prone to invasions by non-native species. Similarly, mobile link animal species, like pollinators and seed dispersers, enhance ecosystem resilience by providing essential services that help maintain connections within and between habitats.
Focusing on food chains and food webs, each organism in a food chain occupies a specific trophic level. These interconnected levels describe the ecosystem's structure and the flow of energy through the system. A diverse food web with redundant species in each trophic level can prevent the collapse of the system when one species is affected by an external threat, hence contributing to the ecosystem's overall resistance and resilience.
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What weather conditions would exist in El Paso based on the weather map seen here?
Answer:
Dry and hot
Explanation:
11
TL 4
5
6
7
sun —
grass
grasshopper-
shrew
Owl
3.Explain why this food chain is not complete.
Two populations of birds with somewhat different coloration live on opposite sides of a peninsula. The habitatbetween the populations is not suitable for these birds.When birds from the two populations are brought together,they produce young whose appearance is intermediate between the two parents. These offspring will breed with eachother or with birds from either parent population, and all offspring of these pairings appear intermediate to variousdegrees.What keeps the two populations separate?
A.temporal reproductive isolation
B.lack of hybrid viability
C.behavioral reproductive isolation
D.spatial reproductive isolation—the only reason these two species don’tmate is because of the inability of the middle land to be occupied
Answer:
Option D, spatial reproductive isolation—the only reason these two species don’t mate is because of the inability of the middle land to be occupied
Explanation:
It is clear from the question that the two bird populations with different color are able to mate and reproduce viable and fertile offspring when brought together. Hence, the only problem due to which these two bird population were not breeding with each other was their distant location and habitat.
Location and habitat are characteristic of spatial distribution and hence they were separate because of spatial reproductive isolation
Hence, option D is correct
Final answer:
D. Spatial reproductive isolation keeps two bird populations with different colorations separate due to an unsuitable habitat preventing interaction and breeding, leading to independent evolution and potential reinforcement of isolation.
Explanation:
The reason the two populations of birds with different colorations remain separate is due to spatial reproductive isolation. This form of reproductive isolation occurs when two populations are geographically separated by an unsuitable habitat, preventing them from interacting and breeding. In this scenario, the unsuitable habitat between the bird populations functions as a barrier, keeping them genetically and reproductively independent even though they can produce viable offspring when brought together artificially.
Habitat isolation ensures that each population can evolve independently through natural selection, mutation, and genetic drift. As a result, even if the two populations were to come into contact again, they might be so genetically distinct that interbreeding would no longer be feasible, leading to the reinforcement of isolation.
One day, you ride your bike to a local bookstore. You purchase a few of your favorite comic books, put them in your backpack, and ride home. Once you get home, you sit in a rocking chair and read your comic books.
Which resource in this scenario is nonrenewable?
Answer: The steel frame to make the bike
Explanation:
it is a natural resource that cannot be replaced,
Answer:
A.
Explanation:
i did the assignment on edgenuety
Ryanâs friends are standing around him, unsure about what to do. They are afraid that he is badly hurt. Ryan thinks it is just a temporary sting and states that he will be all right in a few minutes. One of the men calls 911 on a cell phone.1.What should Ryan 's friends do while waiting for emergency personnel to arrive?A) Help Ryan move his legs and assist him to sit up.B) Place a blanket over Ryan and make sure no one moves him.C) Attempt to stabilize his neck with any type of soft material.D) Carefully put Ryan in the back of a truck with one man holding his neck.E) Ensure that the scene around Ryan is safe and that he is not in any immediate danger.
Answer:
B. Place a blanket over Ryan and make sure no one moves him
.E) Ensure that the scene around Ryan is safe and that he is not in any immediate danger.
Explanation:
Basically spinal injuries need extreme care and attention,because it can leads to permanent paralysis, extreme pain and sometimes death. Generally the vertebral column should be in alignments with the head and neck. The nature of aid to render depends on if he patient is conscious or unconscious. In this case Ryanas is conscious.Therefore, he should be kept still, by placing blanket over Ryan, especially around both sides of the neck. The neck and head should be held to restrict movements. Until aids 911 arrives.
Bacteria collected from a severely inflamed wound are sent to the lab for analysis. The results come back as follows: Gram-positive cocci in irregular clusters, kinase and coagulase positive, and able to grow in the presence of most antibiotics except vancomycin. The bacteria in the wound are most likely:
Answer:
Explanation:
Since the result shows the bacterial culture was irregular clusters of Gram-positive cocci, kinase and coagulase positive, it is should be Staphylococcus aureus and furthermore, it is able to grow in the presence of most antibiotics except vancomycin, the bacterial most likely methicillin-resiistant Staphylococcus aureus (MRSA). This organism is believed to harbor a chromosomal gene called mecA which confers on it the ability to be ressitant to methicillin and other β-lactam drugs antibiotics such as penicillin, cephalosporins and carbapenems
Suppose you remove your test cultures from the incubator and notice that one of them—a known fermenter—has a gas bubble in the Durham tube. Knowing that fermenters frequently produce gas, you ignore the bubble and proceed to the next step. Adding reagents produces no change, and neither does adding zinc. Is this occurrence consistent with what you have learned about this test?
Answer:
When the test culture was removed from the incubator and there was gas bubble in it.The gas bubble produced from the test tube is nitrogen. But if the addition of the zinc and other reagent in the culture and there is no response.
It suggest that the nitrates is being used by the bacteria. The bacteria inside can be aerobic and facultative anaerobic.
They can be gram negative microorganism and yes the occurrence states that the test was successful if the test was about facultative anaerobic and aerobic.
Observing a gas bubble in the Durham tube during a fermentation test indicates that gas was produced by the bacteria. However, the absence of a yellow color change in the medium, even after the addition of reagents and zinc, suggests no acid production, which would require further verification or could indicate unique bacterial metabolism.
When conducting a fermentation test, the appearance of a gas bubble in the Durham tube generally indicates that fermentation has occurred and that gas was produced during the process. In this specific instance, the student observed a bubble in the Durham tube, which suggests that gas production did occur. However, the subsequent addition of reagents and zinc producing no change in the medium indicates there may have been an anomaly. The expected outcome after gas production is for the medium to turn yellow if acid is also produced. Therefore, if the medium remained red-orange, it suggests that no acid was produced, despite the gas bubble being present. This mixed result could imply either an error in the test procedure or conditions that allowed for gas production without significant acid production.
It's important to verify that the absence of color change is not due to experimental errors. The student should ensure that they have used the correct reagents and followed the correct procedures before finalizing the results. The presence of a gas bubble in the Durham tube most likely indicates that the bacteria under observation can ferment the carbohydrates in the medium to produce gas. The absence of a yellow color change after the addition of the pH indicator suggests that either the bacteria produced gas without lowering the pH to acidic levels, or the pH indicator failed to respond as expected. If this is not an experimental error, the test results would suggest a unique metabolic activity of the bacterial species being tested, meriting further investigation.
In the facilitation model of succession A. Later species facilitate the persistence of pioneers. B. Early species facilitate the next disturbance. C. Early species facilitate colonization by later species. D. Late species facilitate dispersal by early species. E. None of the above.
Answer:
Option-C
Explanation:
Ecological Succession is the phenomenon by which the ecosystem develop and change over time. The ecological succession represents the pathway which shows how the ecosystem of a particular area has changed.
The classical model for this succession is known as the facilitation model which suggests that the initial species or the pioneer species which have established in the area modified the area for survival which facilitated the other species to grow there. Once the pioneer species modified the area, the later species colonized the area and flourished.
Since early species facilitate colonization of the later species, therefore, is the correct answer.
What is the term for an organisms ability to survive and reproduce?
A. Fitness
B. Environment
C. Selection
D. Population
Answer: the answer is fitness
Explanation:
Environment is where the organism lives
Population is the amount of organisms
So fitness, also called Darwinian Fitness, is the correct answer
Answer:
A) Fitness
Explanation:
A PEX
Sickle-cell anemia is a genetically inherited disease. Homozygous individuals (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become ill and may die. Individuals homozygous for the sickle-cell trait (ss) have sickled red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the hemoglobin disorder. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause death. In addition, the heterozygotes tend to survive better than either of the homozygous conditions as they are resistant to malaria. If 16% of an African population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be heterozygous (Ss) for sickle-cell and therefore resistant to malaria?
The percentage of the population that will be heterozygous (Ss) for sickle-cell and therefore resistant to malaria is 84%.
Explanation:To calculate the percentage of the population that will be heterozygous (Ss) for sickle-cell and therefore resistant to malaria, we need to find the frequency of the ss genotype first. Given that 16% of the population is born with a severe form of sickle-cell anemia (ss), the frequency of the ss genotype is 0.16.
Since we are dealing with a single gene with two alleles, the sum of the frequencies of all possible genotypes should equal 1. So, to find the frequency of the Ss genotype, we can subtract the frequency of the ss genotype from 1.
Frequency of Ss = 1 - Frequency of ss = 1 - 0.16 = 0.84.
Finally, to get the percentage, we can multiply the frequency by 100.
Percentage of the population that will be heterozygous (Ss) = Frequency of Ss x 100 = 0.84 x 100 = 84%.
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Chantel dropped a tiny spot of ketchup on her pants during lunch. Even though her teacher was able to completely remove the spot, Evelyn is crying hysterically and says that she wants to go home because her outfit is ruined. Her behavior demonstrates the characteristic of preoperational thought known as ____________.
A. Irreversibility
B. Animism
C. Egocentrism
D. Conservation
Answer:
A. Irreversibility
Explanation:
Based on the scenario being described it can be said that her behavior demonstrates the characteristic known as irreversibility. This refers to a stage in early child development in which the child believes that certain actions/events cannot be reversed or undone, such as spilling ketchup on her dress. Chantel believes that the dress cannot be fixed and is why she begins to cry uncontrollably.
¿Qué es la ósmosis? ¿Qué efectos osmóticos se producen cuando las células animales o vegetales se enfrentan con soluciones que tienen distinta osmolaridad?
Answer:
1 (english) -Osmosis is a physiological process where animal and plant organisms balance their aqueous internal environment. Osmosis is a spontaneous process of nature where there is a membrane and two compartments that present a difference in solute or concentration of solute between both compartments, this membrane that we name only allows the transfer of water, with which the water seeks and transfers this membrane from one side to the other, balancing the concentrations of both compartments and reaching equilibrium.
It is essential to clarify that the direction of the water flow will always be in the direction of the area with the highest concentration, that is, it passes from the compartment with the lowest concentration to the one with the highest concentration to dilute it.
In osmosis there is a phenomenon that occurs in this membrane by allowing the passage of water called osmotic pressure.
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1 (spanish) - La osmosis es un procesos fisiologico donde los organismos animales y vegetales equilibran su medio interno acuoso. La osmosis es un proceso espontaneo de la naturaleza donde existe una membrana y dos compartimientos que presentan una diferencia de soluto o concentracion de soluto entre ambos compartimientos, esta membrana que nombramos solo permite el traspaso de agua, con lo cual el agua busca y traspasa esta membrana de un lado a otro equilibrando las concentraciones de ambos compartimientos y llegando al equilibrio.
Es fundamental aclarar que la direccion de corriente de agua siempre va a ser en direccion hacia la zona de mayor concentracion, o sea que pasa del compartimiento de menor concentracion a la de mayor concentracion para realizar la dilucion de esta.
En la osmosis hay un fenomeno que se produce en esta membrana al permitir el pasaje de agua que se llama presion osmotica.
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2- (english)living organisms can face media with the same osmolarity (isosmolar) as their internal environment (in this way there is no water flow), or a hyposmolar medium (there is water flow into the living organism and in these cases the animal or vegetable usually accumulate liquid or edematize), and in hyperosmolar media (where the living organism dehydrates and loses liquid by donating water to the surrounding environment).
2-(spanish)los organismos vivos pueden enfrentarse frente a medios con la misma osmolaridad (isosmolar)que su medio interno ( de esta manera no hay flujo de agua), o a un medio hiposmolar (hay flujo de agua hacia el interior del organismo vivo y en estos casos el animal o el vegetal suele acumular liquido o edematizarse), y en un medios hiperosmolares (donde el organismo vivo se deshidrata y pierde liquido donandole agua al medio que lo rodea).
Explanation:
examples:
In the cases of hyperosmolar media and living organisms that dehydrate, a good example is when salt is thrown at slugs so that they go into osmotic shock and die, they donate all their internal liquid to the external environment to balance the medium.
In those cases where the medium is hyposmolar is when people become overhydrated and usually have swelling in the lower limb.
and lastly, in those isosmolar environments it is in animals that live in very salty waters to be able to subsist and maintain life, in this way their internal concentration is high and the same as the salty external environment generating balance, since if they would live in water sweet they will die for an explosion.
When partially digested food enters the small intestine from the stomach, several events must occur to protect the intestine and allow for continued digestion. What intestinal hormone is particularly responsible for these functions, causing the pancreas to release digestive enzymes and the gallbladder to release bile salts into the intestine?
Explanation:
Gastrin is in the stomach and stimulates the gastric organs to emit hydrochloric acid and pepsinogen (a dormant type of the protein pepsin)The emission of gastrin is invigorated by nourishment showing up in the stomach.The emission is restrained by low pH The digestive system works intimately with the circulatory system to get the ingested supplements disseminated through your bodyWhile the stomach related system gathers and expels undigested solids, the excretory system channels mixes from the circulatory system and collects them in urineHow do endocrine glands help the body maintain homeostasis
Answer:
They control body activities by releasing hormones into the blood.
Explanation:
The endocrine system produces hormones which maintain our blood sugar level (homeostasis) . The pancreas is the main gland involved.
If our blood sugar level increases the pancreas detects this and insulin is then released which acts on our liver. The excess glucose is then converted to glycogen.
Excessive Glucose → Glycogen
If our blood sugar level decreases , again the pancreas detects it and releases glucagon which act on the liver. The excess glycogen is then converted to glucose.
Excessive Glycogen → Glucose
The reason this system is vital is because our brain needs glucose and if the endocrine system is not working, our brain will cease to work efficiently and will ultimately shut down due to lack of glucose supply.
What are the two main categories of contaminants in water
Answer:
hydrogen and oxygen
Explanation:
Because his form is h2o
Answer:
INORGANIC MINERALS, this group of contaminants includes the minerals and toxic metals
RADIOACTIVE MINERALS, this group is really a subset of the first group and can include uranium, plutonium and radium
ORGANIC CONTAMINANTS, organic contaminants and wastes are compounds primarily composed of carbon, hydrogen, and potentially other elements. Gas or liquid-phase organic contaminants may include volatile organic compounds in the form of solvents, chemical precursors and intermediates, petroleum compounds.
Which biological process helps detect changes in the environment and respond? While walking in your backyard barefoot, you step on a thorn from a rose plant. As a result, you immediately cry out in pain. The biological characteristic that you just demonstrated is .
Answer: Response to stimuli
Explanation:
I just responded to stimuli
The corpus spongiosum secretes a thick, clear, alkaline mucus just prior to ejaculation. fills with blood during arousal and causes an erection. nourishes and transports the mature sperm. aids in the production of sperm and hormones.
Answer:
fills with blood during arousal and causes an erection.
Explanation:
The corpus spongiosum is a mass of tissue present in the under part of the penis (male sexual structure) that is actively responsible for erection of the penis. The corpus spongiosum, in conjunction with the corpus carvernosa works to maintain erection of the penis in males.
During sexual arousal, the corpus spongiosum, which surrounds the urethra (passage for urine and semen) helps keep the urethra open for semen to be released while the carvernosa becomes filled with blood. This constant flow of blood into the carvernosa makes the penis enlarge and assume an erect position.
Final answer:
The corpus spongiosum plays a crucial role in male reproductive health by ensuring the urethra remains open during ejaculation, while the secretion of alkaline mucus by accessory glands protects the sperm in the acidic environment of the vagina.
Explanation:
The Role of the Corpus Spongiosum
The corpus spongiosum is a crucial component in male reproductive anatomy, playing a key role in both sexual arousal and reproduction. Unlike the primary role of the corpus cavernosum, which is to fill with blood during arousal and facilitate erection, the corpus spongiosum encases the urethra and performs slightly different functions. This structure becomes engorged with blood, but its primary purpose is not just to aid in erection. Instead, it ensures that the urethral passage remains open during ejaculation, facilitating the passage of semen.
Moreover, the male accessory glands, particularly the bulbourethral glands, secrete a thick, clear, alkaline mucus prior to ejaculation. This secretion plays a vital role in neutralizing the acidity of the urinary tract and the female vagina, thus protecting the sperm upon ejaculation.
In summary, the corpus spongiosum and the secretion of alkaline mucus are essential in the physiology of male reproductive health, ensuring the safe passage and survival of sperm during the process of fertilization.
Mitosis produces cells that are ___________; meiosis produces cells that are ___________.
Answer:
a. diploid; haploid
What is the scientific name of an organism is made up of what two group names
1. The resistance of the body to a pathogen is
called
(1) immunity
(2) antigen
(3) cancer
(4) infection
Which of the following statements is/are incorrect? a) The epidural space is located between the dura mater and the vertebral canal wall. b) The subdural space is located between the dura mater and arachnoid mater. c) The subarachnoid space contains interstitial fluid and is located between the arachnoid mater and pia mater. d) Statement a and b are incorrect. e) Statements b and c are incorrect.
Answer:
C
Explanation:
The meninges are the membranous tissues that cover the spinal cord and the brain, providing support and protection to these organs. They are of three layers.
A) The Dura mater
B) The arachnoid mater
C) The pia mater
The Dura is the outermost meningeal layer and lies directly under the vertebral column bones and skull. The subdural space is the space between the Dura mater and the Arachnoid mater.
The Arachnoid mater lies in the middle of the Dura and Pia mater. Under the Arachnoid layer is the subarachnoid space which contains the cerebrospinal fluid. The cerebrospinal fluid acts as a shock absorber and a cushion to the brain and spinal cord.
The Pia mater lies under the subarachnoid space and directly on the spinal cord and brain and is highly vascularised.
Answer: The correct answer to the question is option C
Explanation: The dura mater, arachnoid mater and the pia mater are all known as the meninges.
The meninges are membranous covering of the brain and the spinal cord,they support,protect and provide metabolic needed to the central nervous system.
The dura mater is the outermost fibrous covering of the brain and the spinal cord,the middle covering is known as the arachnoid mater and it sits directly beneath the dura mater.
The innermost layer/covering is known as the pia mater,it sits/directly covers the brain and the spinal cord.between the pia mater and the arachnoid mater is a potential space known as the subarachnoid space,it contains interstitial fluid and cerebrospinal fluid which protects the brain,supplies the nervous system tissues with nutrients and helps in the removal of waste products from cerebral metabolism.
The subdural space is the space between the dura mater and the arachnoid mater and it only exist in pathological conditions.
We breathe more quickly and deeply when we exercise. Why does this make sense? Select all that apply. a) Because when we exercise, we hydrolyze more ATP to ADP and Pi, and O2 is necessary for the hydrolysis, so we increase our intake of oxygen. b) Because when we exercise, we consume more CO2 and must increase ventilation to supply the CO2. c) Because when we exercise, we produce more CO2 and increased ventilation is necessary to rid ourselves of CO2.d) Because when we exercise, we use more ATP, and additional O2 is necessary to generate sufficient ATP.
Answer:
a) Because when we exercise, we hydrolyze more ATP to ADP and Pi, and O2 is necessary for the hydrolysis, so we increase our intake of oxygen.
c) Because when we exercise, we produce more CO2 and increased ventilation is necessary to rid ourselves of CO2.
d) Because when we exercise, we use more ATP, and additional O2 is necessary to generate sufficient ATP.
Explanation:
During exercise , our body needs more energy in the form of ATP. This ATP comes from break down of food materials in the mitochondria of the cell during cellular respiration. With the addition of oxygen, more ATP is produced during respiration and this ATP is used by the body. With ATP, carbon dioxide is produced as a waste material which can be removed by exhaled out during breathing.
an organism inherits it’s genetic material from it’s-
1. offspring
2. food source
3. parents
4. environments
Final answer:
An organism inherits its genetic material from its parents via genes on the chromosomes, with variations contributing to diversity among offspring. The environment and mutations also play a role in determining characteristics and evolutionary changes.
Explanation:
An organism inherits its genetic material from its parents. This genetic material comes in the form of DNA, where genes are the units of inheritance that determine an organism's characteristics. Each parent contributes one set of genes, which are located on chromosomes, thus providing two copies of each gene to their offspring. Variations in these genes, known as alleles, contribute to the diversity among siblings.
The process of inheritance is universal among cellular organisms, ensuring that the offspring will belong to the same species and will exhibit similar characteristics such as size and shape. While genetic inheritance is a major factor, it is important to understand that the environment can also influence characteristics through mechanisms like fetal programming and intergenerational inheritance.
Additionally, genetic variation arises due to mutations during DNA replication and environmental factors such as UV radiation. Over time, these variations can lead to significant evolutionary changes, as those with beneficial alterations are more likely to survive and reproduce, passing their traits to the next generation.
Plasmids have a high probability of being present in the new generation of cells by all of the following EXCEPT: A. being present at a high number so that some copies will end up in each new cell after cell division B. by having a mechanism to allow for segregation of plasmids into daughter cells C. carrying a gene or genes essential for survival D. all are plausible mechanisms that could ensure maintenance of a plasmid in the population
Answer: C. carrying a gene or genes essential for survival
Explanation:
A plasmid can be defined as the small, extrachromosomal, double stranded DNA that can be found in the bacterial cell and in other prokaryotes. The plasmid DNA remain physically separated from the chromosomal DNA. The plasmid DNA can replicate independently.
The plasmid DNA carries genes which can facilitate the survival of the organism. This gene may provide the selective advantage like antibiotic resistance to the bacteria or any other organism. But the gene may not be essential for the survival of the organism.
The energy that flows through most ecosystems comes from the sun. primary producers convert a fraction of the sun's energy into chemical energy, which can be used by consumers. food webs describe how energy flows between trophic levels in an ecosystem, and a trophic pyramid represents the amount of energy available at each trophic level. part a - identifying trophic levels in a food web
Answer:
Primary producers (autotroph organism), primary consumers (herbivores), secondary consumers (carnivores), decomposers
Explanation:
The trophic web is the process of energy transference through a series of organisms, in which every organism feeds on the preceding one and becomes food for the next one. The first link is an autotroph organism or producer, such as a vegetable, that can synthesize organic matter from inorganic matter. The next links are the consumers: herbivores are primary consumers and feed on producers. Carnivores are secondary consumers and feed on herbivores, and so on. The last links are the decomposers, microorganisms that act on dead animals degrading organic matter.
When one of the links disappears, it affects the superior links as they will not have their food source. The immediately anterior link will be beneficiated, as it will not be eaten by its predator. And finally, as this last link will overgrow, it will consume greater quantities of its food, causing a decrease in its anterior link.
The energy flow in ecosystems starts with the sun and is converted into chemical energy by primary producers. Consumers obtain this energy by consuming the primary producers. Food webs and trophic pyramids describe the flow of energy between trophic levels in an ecosystem.
Explanation:In most ecosystems, the energy flow starts with the sun. This energy is converted into chemical energy by primary producers through the process of photosynthesis. Consumers, such as herbivores, then obtain this chemical energy by consuming the primary producers.
The energy transfer between trophic levels is described by food webs, which illustrate the feeding relationships in an ecosystem. Trophic pyramids represent the amount of energy available at each trophic level, with energy decreasing as you move up the pyramid.
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A dorsal and ventral root of each spinal segment unite to form a
Answer:
A dorsal and ventral root of each spinal segment unite to form a spinal nerve.
Explanation:
Spinal nerves are the mixed nerves emerging from the spinal cord and exiting at the intervertebral foramen.A dorsal and ventral root of each spinal segment unite to form a spinal nerve.
Proximal branches of the spinal nerve includes:
Dorsal (posterior) root is sensory input to spinal cordVentral (anterior) root is motor input of spinal cord.Distal branches :
Dorsal ramus supplies the dorsal body ,muscle and skin.Ventral ramus to ventral skin and muscles and limbs.Meningeal branch to meninges, vertebrae and ligaments.
The dorsal root (comprising sensory axons) and ventral root (comprising motor fibers) of each spinal segment combine to form a spinal nerve, crucial in communication between the spinal cord and the body.
Explanation:In biology, particularly in the study of the nervous system, the dorsal and ventral roots of each spinal segment unite to form a spinal nerve. These spinal nerves are instrumental in transmitting sensory and motor information between the spinal cord and the rest of the body. The dorsal root contains sensory axons which enter the spinal cord, while the ventral root contains motor fibers that emerge from it. Together, these two roots form a spinal nerve, which is an integral component of the peripheral nervous system.
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Our ability to oxygenate the tissues and organs of our bodies depends on our ability to ventilate, or exchange gases in our respiratory system. The resultant distribution of ventilation in our respiratory system depends on what factors?
Answer:
GravityBody positionExplanation:
Ventilation is defined as the exchange of air between atmosphere and the lungs so that the carbon dioxide in the alveoli (the small gas sacs in the lungs) can be exchanged.
Factors affecting distribution of air in respiratory system while ventilation are as following:
Gravity: Total blood flow and alveolar ventilation in the dependent lung is lower than in the non-dependent lung in the left lateral location, since the drop in lung volume outweighs any gravity-dependent ventilation and perfusion increases.Body position: Changing position is necessary to break through the daily monotonic delivery of mechanical ventilation and favour the clearance of respiratory secretions and results in the improvement of lung volume and oxygenation.What is common between the environmental changes of ice ages and global warming?
Answer:
this may help!
Explanation:
The global climate is the connected system of sun, earth and oceans, wind, rain and snow, forests, deserts and savannas, and everything people do, too. The climate of a place, say New York, can be described as its rainfall, changing temperatures during the year and so on.
Answer:
It turns out that our warmth is the result of ocean currents that bring warm surface water up from the equator into northern regions that would otherwise be so cold that even in summer they'd be covered with ice.
Explanation:
Leon asked Alicia to describe four things she did that morning. Alicia said that she rode her bicycle to school, spoke Spanish with her friend, jumped when the fire alarm sounded, and finished her science and math homework. What did Alicia do that was an instinctive behavior?