The question is incomplete as it does not have the options which are:
A) The skin is typically covered by flattened bony scales.
B) They are equally able to exchange gases with the environment while stationary.
C) They are highly maneuverable due to their flexibility.
D) They have a lateral line that is sensitive to changes in water pressure.
E) A swim bladder helps control buoyancy.
Answer:
D) They have a lateral line that is sensitive to changes in water pressure.
Explanation:
Both rays and sharks are the groups of fishes which are considered together in the category of the cartilaginous bones.
The rays are flattened fishes with the presence of the pectoral fins which are not found in the Sharks.
But the rays are considered the most closely related group of fish to the sharks as they both possess a unique sense organ called lateral line which detects the vibrations and the movement of water in the body.
Thus, Option-D is correct.
How do aquatic factors affect the distribution of aquatic life (include both biotic and abiotic factors)? If possible, please answer in 6 or more sentences!!!
Answer:
Both the biotic and abiotic factors contribute to the distribution of the aquatic life in oceans, rivers etc.
Areas of the ocean which are unfavorable for organisms will have very little biodiversity. On the other hand, areas which have favorable living conditions will have most of the biodiversity of the aquatic life.
Some of the factors on which aquatic distribution depends are:
Temperature: Temperature is one of the crucial factors in determining the distribution of the aquatic life. Lesser fishes will be able to survive the harsh, freezing temperatures, hence the biodiversity will be low in such areas of the oceans. The aquatic distribution will be more in warmer areas of the ocean.
Light: Areas of the ocean or rivers which receive more light will have more plants in those areas. This is because photosynthesis requires light energy from the Sun. More plants means that more aquatic animals will also be present in those areas to feed on them.
Preys: Aquatic distribution will be more in areas where there are larger quantities of small fishes. This is because small fishes are the prey for many bigger fishes.
Joseph and his wife Rita, owners of a home in Wexford, are a wealthy elderly couple. Joseph died recently of a sudden death when he was struck by lightning in his metal johnboat while fishing for red fish in the ocean. His body was never recovered. All of Joseph's children and grandchildren (who happened to be at the house at the time for a Father's Day celebration,) eagerly awaited the reading of Joseph's will, since they all knew that he would provide each of his blood relatives with an equal share of his wealth.
When the lawyer arrived to read the will, he noticed that a sum of money was missing from the safe in Joseph's office. The sum missing was equal to one person's portion of the estate value. In addition, a small amount of fresh blood was found on the outside of the safe door, presumably belonging to the thief whose hand most likely got caught on the sharp edges of the safe. As the lawyer was announcing this news, the maid rushed into the room and revealed that she had walked into Joseph's otlice to do her regular dusting and observed the thief quickly slipping out of the patio doors and running away down the beach. She had not seen the face or been able to identify the thief, since he or she wore a mask and a bulky overcoat. She did see, however, that the thief had attached ear lobes sticking out from behind the mask.
The police were called to the home. Upon a1Tival, they immediately ordered blood typing tests on all individuals in the house, and on the blood smear on the safe ( found to be type A-). They also noted the ear lobe type of everyone present.
Answer:
Danny is the thief, stealing all the money.
Explanation:
His son is not related to his family, he would not get any money from Joseph.
This question focuses on Biology, particularly human genetics. The mystery can be potentially solved by examining genetically determined traits of blood type and earlobe attachment and comparing them to all individuals at the scene.
Explanation:The subject of this question is Biology, specifically human genetics. It involves the analysis of traits in an individual, in this case, blood type and earlobe attachment, to solve a mystery. Blood types in humans are determined by genetics, specifically by the ABO and Rh blood group systems. A- blood type is relatively rare, narrowing down possible culprits. Earlobe attachment is also a genetically determined trait, although it's less clear cut than blood type. Nonetheless, it provides another clue. To find the thief, the police would compare blood type and earlobe type among all individuals present, aiming to find a match to both the blood on the safe and the observed earlobe type.
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Explain what makes spotted eagle rays unique.
Answer:
they are spotted
Explanation:
Explain what the "Green world hypothesis" is. *
Final answer:
The Green world hypothesis suggests that herbivore populations are kept in check by predators, which allows the world to remain green and vegetated, promoting a sustainable and biodiverse ecosystem.
Explanation:
The Green world hypothesis is a concept in ecology that suggests that the world remains "green" with abundant vegetation because predators, parasites, and diseases keep herbivore populations in check, preventing them from consuming all the plants. This balance ensures that ecosystems remain sustainable and plants can continue to fulfill their roles, such as carbon dioxide absorption and providing oxygen. The hypothesis highlights the importance of all trophic levels in maintaining the biodiversity and health of ecosystems.
Without such top-down control, herbivores would overconsume plant life, leading to deforestation and ecosystem collapse. Not only does a biodiverse world support a more stable environment, it also provides psychological benefits to humans, as noted by E. O. Wilson. As the Green Party promotes, preserving the natural environment is crucial for the well-being of the planet and ourselves.
The Green World Hypothesis suggests that herbivores are limited by plant defenses, which allows plant populations to thrive and dominate the ecosystem.
The Green World Hypothesis was proposed by ecologist Henry Gleason in the 1970s. It addresses the structure of ecosystems and emphasizes the role of plants and herbivores in regulating populations within those ecosystems.
The main idea is that while herbivores feed on plants, their populations are kept in check mainly by the defensive structures and chemical compounds that plants develop.
This results in an imbalance favoring plant growth over herbivore populations.
The hypothesis highlights that plants have various defenses such as thorns, toxins, and tough leaves to deter herbivores.Herbivores must expend energy to overcome these defenses, which limits their population size and reproductive success.Consequently, plants can grow and reproduce more effectively when herbivore populations are controlled, leading to a greener and more abundant plant community.This concept contrasts with earlier ideas that emphasized predators as the primary limiters of prey populations.LAST ONE!!! HELPPPPP WILLL GIVE BRAINLIEST!!!!!RATE!!!!! AND THANKS!!!!! EASY BUT IM DUMB!!!!
What was found in the "goo" in the beaker of the Miller-Urey experiment?
A) bacteria
B) algae
C) amino acids
D) nucleic acid
How does a ring species illustrate speciation in action?
Answer:
Speciation occurs at terminal population groups
Explanation:
A ring species represents a group of organism that has moved beyond a geographic barrier to produce a ring shaped distribution. This population is contiguous and there exists no barrier to gene flow anywhere in the ring except at the terminal populations.
Speciation is demonstrated in the terminal population has become sympatric and it does not interbreed even if they are connected by chain of intergrading or interbreeding populations
You are exploring the jungle and find a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red flowering plant with a yellow flowering plant and all the offspring have orange flowers. You might assume that the alleles for flower color in this plant show ____________________.
Answer:
You are exploring the jungle and find a new species of plant. Some of the plants have red flowers and some have yellow flowers. You cross a red flowering plant with a yellow flowering plant and all the offspring have orange flowers. You might assume that the alleles for flower color in this plant show
RR x YY= RY, RY, RY, and RY
It is expedient to know when offspring reflects different phenotypic features different from the parents, it might actually be mutation of gene caused such
Explanation:
The alleles for flower color in the new plant species described show incomplete dominance, resulting in an intermediate color (orange) in the offspring when a red flowering plant is crossed with a yellow flowering plant.
Explanation:Based on the provided scenario, where crossing a red flowering plant with a yellow flowering plant results in offspring with orange flowers, you might assume that the alleles for flower color in this plant show incomplete dominance. Incomplete dominance is where the phenotype of the heterozygotes is an intermediate phenotype of the two homozygote parents. In the case described, since the flowers of the offspring are neither purely red nor purely yellow but a mix of both (orange), this suggests that neither the red allele nor the yellow allele is completely dominant over the other.
For example, if we consider red to be R and yellow to be Y, when these alleles come together in the offspring, they produce the intermediate orange color, indicating that neither allele is completely dominant. This is similar to what is observed in snapdragons, where crossing a plant with red flowers (CRCR) with one with white flowers (CWCW) results in offspring with pink flowers (CRCW), illustrating incomplete dominance.
Which of these are associated with the solar wind? Check all that apply.
o produces tides
disrupts communication systems
o composed of charged particles
travels at about 400 km/s
explains changes in the weather
Answer:
Disrupts communication systems
Composed of charged particles
Travels at about 400 km/s
Answer:
B. Disrupts communication systems
C. Composed of charged particles
D. Travels at about 400 km/s
Explanation:
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14. The illustration shows forelimb bones for a human,
whale, and bat.
What is similar and different about the three forelimbs?
Answer:
Similarities between the forelimb bones for a human, whale, and bat is that it has one large upper arm bone and two small lower bones. The main difference of the forelimb of human, whale, and bat in their functions.
Explanation:
Humerus is the large upper arm bone which is present in the human, whale, and bat while the radius and ulna are the two small bones which are present at lower side of the forelimb. These forelimbs are also different from one another in respect to function. The forelimb of whale helps in swimming, in bat it helps in flying while in humans it is used to hold things.
Answer: The forelimb of human, whale and bat have a common fundamental anatomical plan and similar embryonic origin (one large upper arm bone, two small lower bones, carpals and metacarpals). The main difference of the forelimb of this 3 mentioned is in their various function
Explanation: the forelimb of human, whale and bat have a common fundamental anatomical plan and similar embryonic origin but with varied functions. They have the larger upper arm bone as the humerus, while the 2 smaller lower bones are ulnar and radius and the carpals and metacarpals in the wrist and hand. The human fore limb function in grasping, whale uses it forelimb (flippers) in swimming while bat uses theirs in flying.
Light energy+CO2+H20=C6 H12 06+02 (the equation for photosynthesis)
Construct an explanation to describe the cycling of matter and energy that occurs during photosynthesis. Use the chemical equation to provide evidence.
Explanation:
Photosynthesis is the process by which photosynthetic organisms transform light energy into chemical energyPhotosynthesis is an oxidative reductive metabolic pathway in which water is oxidized and carbon dioxide is reduced to carbohydrates Light reaction of photosynthesis is concerned with light dependent oxidation of water and synthesis of high energy compounds such as ATP and NADPHAll proteins and cofactors which involves in light reaction are present in thylakoid membrane hence light reaction of photosynthesis completed in thylakoid membrane Transfer of electron and protons in thylakoid membrane is carried out by four protein complexes and two mobile electron carriers Oxidation of one water molecule generates two electrons, two protons and one atom of oxygen Transfer of one electron from Photosystem II (PSII) to Photosystem I (PSI) requires one photon and transfer of one electron from PSI to NADP+ requires one photon, thus transfer of two electrons from PSII to NADP+ requires four photonsFlow of two electrons from cytochrome b6f complex drives transportation of four protons from stroma to lumenThus oxidation of one water molecule establish gradient of 6 H+, gradient of 6 H+ drives synthesis of 2 ATPReduction of 1 NADP+ to NADPH requires two electrons, thus oxidation of one eater molecule generates 1 NADPH
Scientific thinking: is there a genetic basis for adapting to life at high altitudes?
Answer:
There is no genetic basis for adaptation at high altitudes, but if different phenotypic manifestations, when an organism develops at high altitudes, the demands for oxygen are greater due to the partial pressure of oxygen in the atmosphere, compared to this, living organisms unleashed a transient or definitive polycythemia
Explanation:
Polycythemia means an increase in the number of red balloons, so that at lower partial pressures of oxygen a greater possibility of gas uptake
Answer:
It might represent an evolutionary strategy
Explanation:
Since higher latitudes are hostile environments, the competence for limited resources may be lower than in regions with optimal conditions, thereby it is also expected that adaptation to this type of condition represent an evolutionary strategy to increase the chances of survival
Which is an example of fungi reproduction? Question 24 options: A broken mycelium grows a new mushroom. During budding, a yeast cell forms spores. Lichen fungi produce egg and sperm cells. Mold produces seeds for new mold to grow.
Answer:
Which is an example of fungi reproduction?
During budding, a yeast cell forms spores
Explanation:
Fungi reproduce asexually through budding, fragmentation or producing spores
Final answer:
Fungi like yeast can reproduce asexually through budding, where a new cell forms from a bulge on the parent cell, eventually detaching after the nucleus divides.
Explanation:
Fungi have the ability to reproduce through various asexual methods, such as fragmentation, budding, and producing spores. In the process of budding, a characteristic of yeast, a bulge appears on the side of the yeast cell and the nucleus divides. The bud grows until it is ready to separate and form a new yeast cell. This asexual reproduction is a type of cytokinesis. It's important to note that fungi can also reproduce sexually; however, the example of yeast reproducing by budding is a case of asexual reproduction.
An aquatic arthropod called cyclops house and seen your daughter either small or a bar in the alley of for Barb's is dominant in the same organism resist to the stairs is recessive trait make a key to show possible genotypes and phenotypes of this organism use a rabic you to help you you lost
Answer and Explanation:
The possible genotype and phenotype are as follows
Genotype Phenotype
BbR∧ - Barbed and not resistant to pesticide
BBRR - Barbed and not resistant to pesticide
bbR∧ - Smooth and not resistant to pesticide
bbRR - Smooth and not resistant to pesticide
bb∧∧ - Smooth and resistant to pesticide
Bb∧∧ - Barbed and resistant to pesticide
BB∧∧ - Barbed and resistant to pesticide
Answer:
Explanation:
Check the picture attached to see the answer
A mitosis inhibitor is a medication that is designed to prevent mitosis in certain cells. How could these be helpful in the treatment of tumors?
A.
It would prevent carcinogens from entering the cell.
B.
It would prevent tumor cells from reproducing.
C.
It would force the tumors to enter telophase.
D.
It would force the cells into binary fission.
Mitosis inhibitors can be helpful in the treatment of tumors by preventing tumor cells from reproducing (option b).
Mitosis inhibitors are medications specifically designed to inhibit or prevent the process of mitosis, which is the division of cells.
Tumors are abnormal growths of cells that divide and reproduce at an uncontrolled rate.
By using mitosis inhibitors, these medications can effectively disrupt the normal cell division process in tumor cells.
Mitosis inhibitors work by interfering with the microtubules, which are responsible for pulling apart the duplicated chromosomes during mitosis.
By disrupting the microtubules, mitosis inhibitors prevent the separation of chromosomes and the subsequent division of the cell.
This interruption in the cell division process effectively halts the growth and proliferation of tumor cells.
Without the ability to divide and reproduce, the tumor cells cannot continue to grow and spread.
Additionally, mitosis inhibitors may induce apoptosis, which is programmed cell death, in tumor cells.
By preventing tumor cells from reproducing and inducing cell death, mitosis inhibitors can help to shrink tumors and control their growth.
It is important to note that mitosis inhibitors are typically used in combination with other treatments such as chemotherapy or radiation therapy to provide a comprehensive approach to cancer treatment.
In summary, mitosis inhibitors can be helpful in the treatment of tumors by preventing tumor cells from reproducing, thereby halting their growth and potentially inducing cell death.
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Final answer:
Mitosis inhibitors like vincristine and Taxol are helpful in treating tumors because they prevent tumor cells from reproducing by disrupting the normal functioning of microtubules during cell division.
Explanation:
A mitosis inhibitor such as vincristine or Taxol can be helpful in the treatment of tumors because it prevents tumor cells from reproducing. Medications like these disrupt mitosis by binding to tubulin, which is the subunit of microtubules, thereby interfering with microtubule assembly and disassembly during cell division. For example, vincristine stops cellular division by halting cells in metaphase, while Taxol prevents the depolymerization of the spindle fibers, thus blocking the completion of mitosis.
An endospore may survive a drought because it is protected by a
Answer:
An endospore may survive a drought because it is protected by a THICK WALL
Explanation:
An endospore is a structure that is produced by some bacteria. This structure possesses characteristics such as:
a. Endospores have thick walls
b. They are very resistant and resilient to changes in temperature.
c. They are resistant as well to the action or activity of some chemicals.
d. Endospores serves as a means of protection for microorganisms such as Bacteria.
e. Endospores do not reproduce.
f. Endospores can be dormant or Inactive for a very long period of time.
Endospores may survive drought, activity of chemicals, extreme weather conditions, extreme temperatures due to the presence of thick walls in their structure.
Answer:
An endospore may survive a drought because it is protected by a specialized wall.
Explanation:
Endospores are non-reproductive, specialized cells, produced by bacterias to ensure survival under unfavorable conditions.
The endospore resistance can be explained by its particular wall structure. The most external proteinic layer that encloses the spore, supplies chemical and enzymatic resistance. Under this layer, there is a thicker layer composed of peptidoglycan, the cortex.
An appropriate cortex formation is necessary to avoid the spores´dehydration. This wall provides resistance against high temperatures.
The germ cellular wall is located under the cortex. This layer of peptidoglycan will become the bacterial cell wall after the endospore germinates.
The internal membrane, under the germen´s cellular wall, is an important permeability barrier against many chemical products potentially harmful.
NEED RN 20 POINTS
The variables in the first part of this experiment include the presence of moisture and earthworm behavior. Use the
drop-down menus to identify the independent and dependent variables.
The presence of moisture is the
The earthworm behavior is the
variable.
W variable.
Answer:
The presence of moisture is the independent variable.
The earthworm behavior is the dependent variable.
Explanation:
Based on the nature of variables, the independent variable is the presence of moisture while the dependent variable is earthworm behavior.
What are variables in an experiment?Variables in an experiment are factors on which the result of the expert depend on and can be altered by the researcher.
Variables can be either:
dependent variableindependent variable constant variableThe independent variable is altered by the researcher and produces changes in the dependent variable. The constant variable does not change.
In the given experiment, the independent variable is the presence of moisture while the dependent variable is earthworm behavior.
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These key features of schizo affective disorder distinguish it from schizophrenia:____________ a. various psychotic symptoms such as delusions and hallucinations b. persistent delusions that are not bizarre and not due to schizophrenia c. marked symptoms of both
Answer:
These key features of schizo affective disorder distinguish it from schizophrenia
various psychotic symptoms such as delusions and hallucinations
Explanation:
During photosynthesis,
is used to break water down into oxygen and hydrogen.
oxygen
glucose
sunlight
carbon dioxide
Answer:
The answer is sunlight.
Explanation:
Sunlight is captured from the plants leaves and that energy is used to break down water into hydrogen and oxygen.
Answer:
The answer is Sunlight!!
Explanation:
1. Which statement best describes the galaxies closest to the Milky way?
These galaxies are independent of and unaffected by the milky ways gravitational pull
These galaxies are all identified as spiral
These galaxies include irregular, spiral, and elliptical types
These galaxies consists mostly old Stars
Answer:
These galaxies include irregular, spiral, and elliptical types.
Explanation:
You're describing the galaxies near the milkyway, and the different types.
why is it necessary to measure the temperature in the water bath
Measuring the temperature in a water bath is vital for controlling the heat transferred during processes like calorimetry, maintaining thermal equilibrium, and absorbing heat efficiently due to water's high specific heat. Different thermometers may also yield slightly different results, further underscoring the importance of temperature measurement in obtaining accurate results.
Explanation:It is necessary to measure the temperature in a water bath in order to monitor and control the amount of heat transferred in different processes, such as in calorimetry. Calorimetry is a technique used to measure the heat involved in chemical and physical processes. Heat is exchanged with a calibrated object, known as the calorimeter, and the temperature change measured by the calorimeter is utilized to derive the amount of heat transferred by the process under study.
Meticulously measuring the temperature of the water bath aids in maintaining thermal equilibrium and ensures that the correct amount of heat is being absorbed by the solution. Moreover, because the specific heat of water is significantly greater than that of many other substances, it can absorb a large amount of heat without a large change in temperature, making it an ideal medium for temperature control.
Additionally, different thermometers may give somewhat different results for other temperatures, hence adding to the importance of temperature measurement for accurate results.
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The cell-cycle control system initiates chromosome segregation only after _________ has occurred
Answer:
metaphase
Explanation:
The cell cycle control system initiates chromosome segregation only after metaphase has occurred.
At metaphase, the chromosomes of a dividing cell align at the equator to form what is known as the metaphase plate. Each chromosome gets engaged by spindles from the opposite sides of the poles at the kinetochore of the centromere.
Thereafter, the cell proceeds to the anaphase stage during which the shortening of the spindle fibers pulls the chromosome apart into sister chromatids and this eventually causes the sister chromatids to start migrating to opposite poles of the cell.
Which layer of the alimentary canal is composed of simple squamous epithelium and areolar connective tissue?
Answer:
The serosa is the outermost layer of the intraperitoneal organs (it's also considered the visceral peritoneum). In most alimentary canal organs, its made up of areolar connective tissue covered with mesothelium, a single layer of squamous epithelial cells
Explanation:
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01:02:57
Your teacher is describing a plant that bears seeds and flowers, has five flower petals, and has seeds that are enclosed by
fruits. What kind of plant is he describing?
gymnosperm
o angiosperm
obryophyte
monocot
Answer: angiosperm
Explanation: NOT: monocot
angiosperm
Answer:
angiosperm
Explanation:
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PLZZ HELP!!!
The diagram below shows four processes, A, B, C, and D, by which carbon circulates between the atmosphere, plants, and animals.
Which processes represent respiration?
Process A and Process C
Process B and Process D
Process A and Process D
Process B and Process C
Answer:
the correct answer is D.
Explanation:
Answer:
process a and c
Explanation:
If DNA has the code ATGC, what is the complementary code in mRNA?
Answer:
The complementary code for mRNA would be UACG.
Explanation:
DNA pairing has the following pairs: A-T and C-G
RNA pairing has the following pairs: A-U and C-G.
In this case, we would use the RNA pairing rules and find the complementary pairs for the DNA sequence. So the A will pair with U, T will pair with A, G will pair with C, and C will pair with G, giving the complementary mRNA code as UACG.
If DNA has the code ATGC, the complementary code in mRNA will be UACG.
WHAT IS TRANSCRIPTION:Transcription is the process whereby a mRNA molecule is synthesized from a DNA template. The information in the DNA is used to produce a mRNA molecule.
During transcription;
Adenine in DNA pairs with Uracil in mRNAThymine in DNA pairs with Adenine in mRNACytosine in DNA pairs with Guanine in mRNATherefore, If DNA has the code ATGC, the complementary code in mRNA will be UACG.
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Which type of climate has the greatest amount of rock weathering caused by frost action? *
A) a wet climate in which temperatures alternate between below freezing and above freezing
B) a wet climate in which temperatures remain below freezing
C) a dry climate in which temperatures remain below freezing
D) a dry climate in which temperatures alternate between below freezing and above freezing
Answer:
This would be A hope this helps
Explanation:
The greatest amount of rock weathering caused by frost action occurs in a wet climate where temperatures alternate between below freezing and above freezing, because of the repeated freeze-thaw cycles that cause rocks to fracture.
Explanation:The type of climate with the greatest amount of rock weathering caused by frost action is A) a wet climate in which temperatures alternate between below freezing and above freezing. Frost action, or freeze-thaw weathering, is most effective in climates where the temperature variations allow water to repeatedly freeze and thaw. When water freezes in the cracks of rocks, it expands, exerting pressure and causing the rock to break apart. This process is less effective in climates where the temperature remains constantly below freezing, as the water remains frozen and does not undergo the expansion and contraction that causes the rock to fracture. Similarly, in dry climates (whether the temperature fluctuates or remains steady), there is insufficient moisture to contribute significantly to frost action.
Climate types such as subarctic climates and climates with pronounced seasonal temperature variations, often characterized by wet conditions and temperature cycles around the freezing point, result in considerable frost weathering. In contrast, dry or arid climates like deserts and polar climates with extreme colds provide less opportunity for such alternating freeze-thaw cycles and thus experience less frost action weathering.
What do plants create that helps human beings survive?
oxygen
chlorophyll
carbon dioxide
Answer:
oxygen
Explanation:
What was Thomas hunt Morgan‘s main contribution to science
When the immune system detects a pathogen in the body, it
When a pathogen enters the body, cells in the blood and lymph detect the specific pathogen-associated molecular patterns (PAMPs) on the pathogen's surface. The immune system can be activated by a lot of different things that the body doesn't recognize as its own. These are called antigens. Examples of antigens include the proteins on the surfaces of bacteria, fungi and viruses. ... Sometimes the immune system mistakenly thinks that the body's own cells are foreign cells. Antigens are proteins that are found on the surface of the pathogen. ... The antibodies destroy the antigen (pathogen) which is then engulfed and digested by macrophages. White blood cells can also produce chemicals called antitoxins which destroy the toxins (poisons) some bacteria produce when they have invaded the body.
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-ari.
• What are the groups of plants and
animals that dominated the eras of
Earth's history?
Answer:
Missed and algae are the earliest plants that Dorminate Earth history.
The groups of animals are sponges, jawless fishes, evolution of amphibians, reptiles and early mammals.
Explanation:
Most animals and plants are classified as muiticellular Eukaryotics. They have many cells and nucleus in their organelles wy some animals or plants are classified as prokaryotics base on relative evolution history.
Both animals and plants owe their origin to endosymbiosis, a process whereby one cell ingests another but fail to digest it. Just like plants, animals evolved from the sea from history and that is why the remained for at least 600 million years.