Habitat destruction is the leading cause for declining populations of species on our planet. Due to human development, industry, and forestry, humans are destroying the habitat of many species at an alarming rate. Consider the bald eagle. The bald eagle population was threatened in the late 60s and early 70s. Thanks to an aggressive bald eagle protection program, bald eagle numbers in the wild have soared as seen in the population graph above. The bald eagle's population very nearly reached extinction. Why did the bald eagle's declining population make it more vulnerable to extinction? A) As populations decline, reproduction stops B) As populations decline, less resources are available C) As populations decline, there is less genetic diversity D) As populations decline, birds migrate farther away from other populations

Answers

Answer 1

The answer is C) As populations decline, there is less genetic diversity. This is called the 'founder effect'. With limited numbers of individuals in a population, it is more likely that highly-related individuals will mate. This will result in recessive and deleterious genes being manifested in the phenotype. Consider that higher organisms are diploid: they contain two complete sets of chromosomes, one from each parent. Within each chromosome, some alleles will be dominant while others will be recessive, i.e., for the recessive alleles to be manifested in the phenotype, both have to be recessive, whereas for the dominant allele, only one of the alleles has to be dominant for the allele to manifest in the phenotype. With lower genetic diversity, a higher proportion of individuals will have chromosomes containing both recessive alleles, which may manifest as lowered fitness and genetic disorders.

Answer 2

C) As populations decline, there is less genetic diversity

As populations decline, there is less genetic diversity The bald eagle's population reached alarmingly low numbers due to habitat loss and with low populations, there is not as much genetic variability. With fewer variations, a species survival is difficult to overcome without conservation efforts.

~USATestprep~

Related Questions

How do ions and electrical charges play a role in communication with the muscle?

Answers

The electrical charge that travels along the motor neuron is caused by depolarization. Depolarization is caused by the inflow of Na+ ions into the neuron. At the neuromuscular junction, depolarization causes Ca2+ ions to enter the post-synaptic neuron. Binding of Ca2+ to sensor protein in the neuron causes the neuron to release neurotransmitter acetylcholine into the synaptic cleft. The neurotransmitter binds to ionotropic receptors on the sarcolemma of the muscle fiber causing contraction of the muscle fiber.

Ricky notices a similarity between a fried egg and the diagram of a cell. Which cell organelles is Ricky likely to associate with the parts of the egg?

Answers

The nucleus potentially resembling an egg yolk, the main component of a cell. The white of the egg would be the gel inside the cell, can't remember the name of it?

Answer:

The correct answer is nucleus.

Explanation:

A fried egg comprises the yolk portion in the center facing up, and this yolk part is surrounded by the white part known as albumen. An individual on observing the fried egg and the diagram of a cell can see a certain resemblance. That is the yellow portion of the fried egg can be matched easily with the nucleus of the cell, and the white part, that is, the albumen with the cell's cytoplasm. The nucleus refers to a cell organelle that is found within the cells in eukaryotes, while the fluid part found within the cells is known as cytoplasm.

A localized collection of pus at the site of infection is:

Answers

I believe it is called Abscess. Abscess is a collection o pus that has built up within the tissue of the body. It characterized by symptoms and signs which include redness, pain, warmth, and swelling. The swelling may feel fluid-filled when pressed. Treatment involves drainage and antibiotics if there is a surrounding infection.

Final answer:

A localized collection of pus is an accumulation of dead pathogens, neutrophils, tissue fluid, and cells at the site of an infection, suggesting an immune response to the bacterial infection.

Explanation:

A localized collection of pus at the site of infection is typically the result of the body's immune response to bacterial invasion, where neutrophils and macrophages are recruited to eliminate the pathogen. During this process, neutrophils phagocytose the pathogens and eventually die, with their remains contributing to the accumulation of pus. Pus is therefore an accumulation of dead pathogens, neutrophils, tissue fluid, and other bystander cells that may have been killed by phagocytes at the site of the infection.

Examining bacteria under a microscope from a pus sample can provide valuable information, such as the morphology and arrangement of the bacteria, which can be critical in determining the approach for treatment. In some cases, bacterial infections can escalate if not properly treated, leading to more severe symptoms and complications, such as necrotizing fasciitis, which requires immediate medical attention.

The round usda inspection stamp on poultry means that the birds are

Answers

It means that they are safe, wholesome, and correctly labeled and packaged.

~migration of birds into a new habitat ~pollen blowing in from plants in a far-away habitat ~fish swimming in to a new habitat in a river ~seeds being carried to an island on the ocean waves The four examples listed above could all be responsible in the change in a gene pool, also called
Adaptation
Founder effect
Genetic drift
Gene Flow

Answers

The four examples listed above could all be responsible in the change in a gene pool also called founder effect. The founder effect is the reduction of genetic variation that occurs when a new population is started by a few members of the original population. Under the founder effect, a small population of a species is physically isolated from the original population,and the isolation prevents breeding between the two populations.

Migration or gene flow is any movement of individuals, and/or the transfer of alleles or genes from one population to another.

Answer is gene flow.

Plasmodium is a parasitic apicomplexan that causes malaria in humans. the figure below illustrates the plasmodium life cycle.

Answers

Plasmodium is a monocellular parasite causing malaria to humans. The parasite's life cycle always includes two hosts, an insect host and a vertebrate host. The parasite's cells are injected into the vertebrate's (human in our case) bloodstream by the insect host (mosquito). There are several stages in its life cycle but the sexual reproduction occurs only in the insect. In the insect, gametocytes (haploid gametes) merge and form a zygote which in turn becomes an oocyst. Oocysts divide multiple times and that way a great number of sporozoites is produced. These sporozoites travel to the salivary gland of the mosquito and are injected into the bloodstream of the second host, the human. In humans, sporozoites infect liver cells and red blood cells.

According to this information, the four statements about Plasmodium which are true are:
-Plasmodium cells are transferred to human cells through mosquito saliva.
-The complete life cycle of Plasmodium requires two hosts.
-Plasmodium cells infect two specific types of cells in humans.
- Inside an infected mosquito haploid gametes fuse, forming a haploid zygote that develops into an oocyst.

In the video, light passing through two slits creates a pattern of bright and dark fringes on a screen. the bright fringes result from __________; the dark fringes result from __________.

Answers

i think the answers are constructive interference/destructive interference; . interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower or the same amplitude. The interference of two waves , when in phase, the two lower waves create constructive interference, resulting to a greater amplitude of the resultant wave. When out of phase they create a destructive interference.

Imagine that your finger is accidentally caught in a closing car door. Describe the path of stimulus and response that would happen in the nervous and musculoskeletal systems.

Help fast please <3

Answers

Sensory neurons in finger will start a chain reaction that is passed through the neurons from the finger tip all the way through the brain. The brain is then capable of interpreting the reaction and will immediately send response back through motor neurons capable of immediately moving the finger. Depending or the severity, swelling and bleeding may occur around the affected area.

Answer:

Sensory neurons in finger will tell the brain it hurts then the brain sends a response back through motor neurons making the finger move.

During an action potential, the rapid decrease in sodium ion permeability and the simultaneous and rapid increase in potassium ion permeability is responsible for __________.

Answers

The answer is repolarization. In the first phases of an action potential,
Sodium ions flow into the cell, through the voltage-gated ion channels, causing depolarization from the resting potential of -70 mV. In the later stages of the action potential, the potassium ion selective filter channels open and potassium ions move from inside of the cell to the outside. This repolarizes the cell before sodium ions begin to be pumped out of the cell.

The answer is: the repolarization of the cell.
Muscle and nerve cells use action potentials to communicate and send signals. Nerve cells have a resting membrane potential which is a negative concentration gradient, meaning that there are more positively charged ions outside the cell compared to the inside of the cell. These positively charged ions are sodium ions, therefore, there are more sodium ions outside the cell and more potassium ions inside the cell. Repolarization of the cell is a process that happens during action potential and it comes after the depolarization of the membrane. During repolarization, the membrane potential changes and returns to the negative value of the resting potential. At this phase, the sodium channels close and the potassium channels open, causing the nerve cell to lose positively charged ions.

What toxic compounds can be found in bottled water? Where do they come from?

Answers

Final answer:

Bottled water can contain harmful compounds like Bisphenol A (BPA), Fluoride, Benzene, Toluene, and Xylene, originating from the manufacturing process and contamination from industrial activities. Chlorinated compounds are used as disinfectants but don't successfully eliminate all organisms. Furthermore, water close to industrial areas often contains contaminants, including chemicals and untreated waste.

Explanation:

Bottled water can contain several toxic compounds, the source of which mostly come from the process of bottling and industrial contamination of water sources. Some notable examples are Bisphenol A (BPA), which is used in the manufacturing of hard plastics and may contaminate the water within the bottle; Fluoride which, although beneficial in small amounts, can have adverse health effects when consumed in large quantities; and harmful chemicals used in the fracking industry, such as Benzene, a carcinogen, Toluene, a system depressant, and Xylene, a neurotoxin.

Chlorinated compounds are used as disinfectants, but they may irritate the skin, eyes, and nasal passages, and they may not completely eliminate certain organisms. Cryptosporidium, for example, is a hardy protozoan parasite that can survive in chlorinated water.

Water in proximity to industrial activities or human settlements often becomes contaminated with chemicals, radioactivity, heat, and untreated waste leading to compromised water quality. Pollutant accumulation from the food chain can result in the ingestion of harmful substances by humans, including carcinogens like mercury.

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Here are four individual strands of dna: 1- 5'aattccggcctaactt3' 2- 5'aagttaggccggaatt3' 3- 5'ttaaggccggattgaa3' 4- 5'ttcaatccggccttaa3' which strands would pair with one another?

Answers

In the context of DNA strand pairing, there is a specific pairing sequence. Adenine (A) will always pair with thymine (T); cytosine (C) will always pair with guanine (G). One strand goes from 5' to 3' and the pair strand goes from 3' to 5'. In this case, 1 and 2 pairs with each other as well as 3 and 4.

5'-AATTCCGGCCTAACTT-3' is paired to 5'-AAGTTAGGCCGGAATT-3'
5'-TTAAGGCCGGATTGAA-3' is paired to 5'-TTCAATCCGGCCTTAA-3'

What is the correct order going from the bottom to the top of maslow's hierarchy of needs?

Answers

Physiological, safety, love/belonging, esteem, and self actualization.

The Maslow pyramid has five tiers. Basic needs are made up of the bottom two tiers, safety and physiological demands. The following are psychological needs, often known as social and esteem needs. The Maslow hierarchy of requirements places self-actualization demands at its apex.

What bottoms to the top of maslow's hierarchy of needs?

Maslow divided basic human needs into five groups, including those related to physiology, safety, social interaction, esteem, and self-actualization. Include the absolute necessities for life, such as the need for food, drink, air, and sleep. These include the desires for love, affection, and belonging.

From the bottom of the hierarchy up, needs to include physiological (food and clothing), safety (work security), love and belonging needs (friendship), esteem, and self-actualization.

Therefore, Physiological, safety, love/belonging, esteem, and self actualization.

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Sarah has experienced brain damage making it difficult for her to understand spatial layout. which area of her brain has most likely sustained damage?

Answers

PPA (Parahippocampal place area)

A rock that forms when magma hardens beneath Earth’s surface is called an _____. intrusive igneous rock extrusive metamorphic rock intrusive metamorphic rock extrusive igneous rock

Answers

A rock that forms when magma hardens beneath Earth's surface is called an intrusive igneous rock.

The right option is; intrusive igneous rock

A rock that forms when magma hardens beneath Earth’s surface is called an intrusive igneous rock.

Intrusive igneous rocks are types of igneous rocks that are formed when magma crystallizes and solidifies below the earth’s surface to form intrusions. Most intrusive igneous rocks possess well-formed and large crystals. Examples of intrusive igneous rocks include diorite, granite, dunite, gabbro, peridotite, and pegmatite.

Predators of different species competing for the same prey is called ______________ competition.

Answers

The answer is 'inter-species competition'. This is when different species in the same environment complete for the same resource. Examples can be trees in a dense forest competing for sunlight. Those trees able to grow the fastest and tallest will break through the forest canopy and receive the full sunlight. Another example are large predators of different species living on the African Savannah environment, such as lions and leopards, which would be competing for the same prey animals.

The characteristic that all lipids have in common is that _____. see concept 5.3 (page 72)

Answers

Final answer:

Lipids all have the characteristic of being hydrophobic, meaning they repel water. They are composed of hydrocarbon chains that do not dissolve in water. Examples include fats and phospholipids.

Explanation:

The characteristic that all lipids have in common is that they are hydrophobic, meaning they repel water. Unlike other biological molecules, such as carbohydrates and proteins, lipids do not dissolve in water. This is because lipids are composed mostly of hydrocarbon chains, which are nonpolar and do not form hydrogen bonds with water molecules.

For example, fats, which are a type of lipid, consist of three fatty acid chains attached to a glycerol molecule. The fatty acid chains are hydrophobic, while the glycerol molecule is hydrophilic. This creates a structure that repels water.

Other types of lipids, such as phospholipids found in cell membranes, also have a hydrophobic region and a hydrophilic region. The hydrophobic tails of phospholipids face inward, away from the watery environment, while the hydrophilic heads face the water. This arrangement helps to form the structure of the cell membrane.

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An infant is admitted to the neonatal intensive care unit with exstrophy of the bladder. what covering should the nurse use to protect the exposed area?

Answers

Moist sterile dressing must be placed to cover the bladder. This will prevent the bladder from drying up. The goal in putting a cover is to prevent loss of moisture and prevent infection. Covering the organ can also prevent trauma in the protruding part.

Mountains are a geographical feature found in many biomes. the rain shadow effect is where ________.

Answers

Mountains generally act as the headwaters of rivers. Clouds moving along a weather frontal system are advected to a higher altitude when they encounter mountains, causing condensation and rainfall. Unfortunately, in most parts of the world, weather patterns follow a common direction most of the time. Therefore, when the clouds encounter the mountain range, it is usually from one direction. This results in the majority of rainfall falling only on one side of the mountain, and the mountain acting as a barrier preventing cloud systems from carrying moisture across the mountain.

The following is a multi-step reaction. the rate-limiting step is unimolecular, with a as the sole reactant.

Answers

I) from the information given, that the rate-limiting step is unimolecular with A as the sole reactant, the rate law of the reaction is therefore;
Rate = k[A]
If you double the concentration of A, the rate of the reaction wil also double to 0.008 M/s

ii) The concentration of B has no effect on the rate of reaction, and therefore halving the concentration of B, will not change the rate of reaction. Thus the reaction rate remains 0.0040 M/s

iii) Increasing the concentration of A by 4-fold also increases the rate of reaction by 4-fold to (0.0040 ×4) = 0.016 M/s. This is because the rate of reaction depends on the concentration of A, therefore any change in this concentration affects the rate of reaction, such that an increase in the concentration of A cause a corresponding increase in the rate of reaction and vice versa.

Why do some regions specialize in "milk products" like cheese and butter rather than fluid milk? identify some of these important regions?

Answers

This happens because these regions are located further away from urban areas and the milk can easily get spoiled before it is delivered to the consumers. Therefore, dairy farms which are away from urban areas, process the milk in order to produce milk products that can last longer. Milk products such as butter or cheese can stay fresh for a longer period of time and they do not get spoiled before reaching the consumers. New Zealand is a place where this practice is quite common since it is located at a great distance from important markets, such as Europe and North America. Milk can be shipped at such a great distance only in the form of processed milk products.

Sequence of m-rna that is not involved in coding for a protein which is cut out before it is read by the ribosomes

Answers

The correct answer is introns.

Introns are non-coding sequences in the immature mRNA made from DNA transcription. Since they are non-coding, they do not contribute to the final protein that will be translated; therefore introns need to be removed. Introns are removed by RNA splicing; and this is succeeded by 5' capping and adding of poly-A tail.

A patient with allergic rhinitis is taking a compound product of loratadine/pseudoephedrine [claritin-d] every 12 hours. the patient complains of insomnia. the nurse notes that the patient is restless and anxious. the patient's heart rate is 90 beats per minute, and the blood pressure is 130/85 mm hg. the nurse will contact the provider to:

Answers

discuss using any intranasal glucocorticoid and loratadine.

Diets high in lean protein are associated with an increased risk for cardiovascular disease. diets high in lean protein are associated with an increased risk for cardiovascular disease.
a. True
b. False

Answers

False, lean protein is good for you.

Answer:

The correct answer is option b. "False".

Explanation:

It is false that diets high in lean protein are associated with an increased risk for cardiovascular disease. Lean protein is a term used to describe food that is rich in protein and low in fat. A diet with low fat intake will be beneficial for the heart, because dietary saturated fat intake is what is associated with cardiovascular disease.

This gas is formed when nitrogen oxides react with a group of air pollutants known as reactive organic substances in the presence of sunlight. It's presence in the stratosphere is protective but can be toxic in the troposphere.
carbon dioxide

nitrogen

ozone

hydrogen

Answers

Hey, Name's Jessy. I hope, I answer your question.

The answer is Nitrogen.

The Answer would be C or Ozone

What is the primary function of the organelle labeled X in this cell

Answers

They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.

Cross a parent that is homozygous recessive for both traits (bbee) with a dihybrid (BbEe). First, draw a Punnett square in your notes. For each offspring in the Punnett square, determine the phenotype. In other words, what are the fur color and eye color? Finally, use that information to fill in the predicted fraction of each phenotype in the data table below. Predict Results with Linked Genes Black Fur and Black Eyes Black Fur and Red Eyes White Fur and Black Eyes White Fur and Red Eyes Predicted Fraction /16 /16 /16 /16

Answers

in this question, one parent is homozygous recessive (bbee) and other parent is dihybrid (BbEe)
B - black fur dominant trait
b - white fur recessive
E- black eyes dominant
e - red eyes recessive

a punnett square shows all the possible combinations of genotypes with the corresponding phenotypes that the offspring could inherit.
the genotypes and their phenotypes for the offspring are given below ;
BBEE / BbEe / BbEE / BBEe - black fur and black eyes
Bbee / BBee - black fur and red eyes
bbee - white fur and red eyes
bbEe / bbEE - white fur and black eyes

after analysing the punnett square the following results are obtained;
black fur and black eyes - BbEe- 4/16
black fur and red eyes -Bbee - 4/16
white fur and black eyes - bbEe - 4/16
white fur and red eyes -bbee - 4/16

Answer:

The picture shows the correct answers.

What happens when blood glucose levels fall below normal? 1. The pancreas releases insulin. 2. The pancreas releases glucagon. 3. The pituitary gland releases insulin. 4. The pituitary gland releases glucagon.

Answers

Answer:

2. the pancreas releases glucagon

Explanation:

its not 1 because insulin is used to decrease blood glucose levels.

its not 3 because the pituitary gland does not produce insulin and insulin is not needed

its not 4 because the pituitary gland does not release glucagon.

it IS 2. because the pancreas DOES produce glucagon and GLUCAGON is needed to move GLUCOSE into the blood stream.

When the levels of sugar levels in the body fall below the normal level, the pancreas releases glucagon. Therefore, option "B" is correct.

What is the function of the glucagon hormone?

Glucagon is a peptide hormone. it is a glucose-regulatory hormone. it is released by the pancreas. When the levels of glucose drop in the blood it works against the insulin by stimulating the hepatic cells for the production of glucose. This results in an increase in levels of glucose to normal levels.

Insulin hormone is released when the levels of sugar are high in the blood to lower it whereas glucagon is released when the levels of sugar are low in the blood to bring it to normal.

Therefore, glucagon increases the levels of glucose when falls below normal levels.

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Hypersecretion of ________ results in increased urinary output and dehydration.

Answers

The correct answer is "atrial natriuretic peptide" or "ANP". ANP is secreted by the the atria and the muscle cells of the heart. ANP primarily functions to increase sodium excretion (hence the term natriuretic) which facilitates osmotic diuresis, since there will be a high amount of solute in the renal tubules, this will exert an osmotic force that draws water and facilitate diuresis. This will eventually result to increased urinary output and dehydration.

Final answer:

Hypersecretion of antidiuretic hormone (ADH) leads to excessive urination (polyuria) and can cause dehydration. This hormone is essential for water retention in the kidneys, and its deficit leads to conditions like diabetes insipidus.

Explanation:

Hypersecretion of antidiuretic hormone (ADH) results in increased urinary output and dehydration. ADH, also known as vasopressin, is crucial for maintaining the body's water balance. It regulates the amount of water excreted by the kidneys by causing reabsorption of water in the kidney tubules. In conditions such as diabetes insipidus or after consuming substances like alcohol, there can be underproduction or inhibition of ADH release. This leads to an inability to retain water, resulting in excessive urination, or polyuria, which can cause dehydration. A healthy person usually produces less than 2.5 liters of urine per day, but conditions that inhibit ADH can increase urine output significantly.

the diploid number of chromosomes in horses is 64. what is the haploid number of chromosomes in horses?

Answers

The haploid number of the chromosomes should be 32.

Diploid number means that they have the complete sets of chromosomes in their cells, these cells are usually found in somatic (body) cells and different organisms have a different number. For example, a human somatic cell has 46 chromosomes, such as a muscle cell, or a skin cell etc.

Meanwhile, haploid number means that the number of chromosomes in the cell only have half of the chromosome number than that of the diploid cells. These haploid cells are usually found in gametes of sexually reproducing organisms, such as human, we have 23 chromosomes in our sex cells. This is important because we have to make sure the chromosome number of offsprings are not doubled, as during sexual reproduction, male and female gametes fuse together to form a zygote.

Therefore, to calculate the haploid number of a cell, we can divide the diploid number by 2, which is 64/2, and the answer would be 32.

32 is the answer for sure

Biological recognition is important in processes at the molecular, cellular, and organismal levels. Choose ONE of the following, explain how the process of recognition occurs, and discuss a specific example.

-Neurotransmitters are recognized in the synapse.

-Target cells respond to specific hormones.

Answers

Neurotransmitters are recognized in the synapse. In the event wherein a nerve action potential triggers the release of neurotransmitter containing synaptic vesicles from the axon of a nerve, the dendrites of the receiving nerve will recognize these neurotransmitters and trigger specific actions (i.e. excitatory or inhibitory). For instance, the release of glutamate from the synapse will trigger an excitatory response (depolarization) while the release of GABA will trigger an inhibitory response (hyperpolarization).

Target cells respond to specific hormones. Hormones are endocrine molecules that trigger specific cellular functions such as glucose uptake, urine secretion and reabsorption, etc. Hormones bind to either (1) specific hormone receptor (i.e. insulin receptors), (2) cytoplasmic receptors (i.e. thyroid hormone receptor), and (3) nuclear receptors (i.e. steroid hormones). All of which will trigger a cascade that will eventually lead to new protein synthesis (or the inhibition of such). For example, insulin binds to insulin receptors in muscle cells wherein it would trigger the synthesis of glucose channels which will facilitate the uptake of glucose.

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