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nadezda [96]
3 years ago
15

That is a prerequisite (requirement) for counter-current exchange to function? Select all that apply. Select one or more:

Biology
1 answer:
Setler79 [48]3 years ago
6 0

Answer:

D, E, and F

Explanation:

The requirements for counter current exchange are gills, bulk flow of blood and water and air and the blood pigment. Also, the fluids should flow in close proximity and flow in the opposite directions.

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Identify the example below that is NOT considered an evidence of evolution.
iris [78.8K]

There are several evidences of evolution, some that we have greater knowledge and others we don't, but in this question all alternatives contain evidence of evolution, to understand better we need to know that.......

<h3>Fossil Evidence</h3>

Fossils are remains or traces of preserved organisms that are more than 10,000 years old and provide important information about life in past times and what the environment was like at a given time.

  • Bones
  • Teeth mark
  • Footprints
  • and petrified feces are examples of fossils.

<h3> Comparative embryology and Homologous structures</h3>

Some species have anatomical characteristics that are very similar to those present in individuals of other species. Although these structures often do not have the same function, it is possible to infer that, at some point, these species had a common ancestor.

<h3>Biochemistry and Metabolism</h3>

The analysis of cells and the biochemistry of organisms have revealed that there is much similarity between all living beings. This fact suggests that, at some point in evolutionary history, we had a common ancestor.

It can be seen, therefore, that the theory of evolution is supported by several pillars and every day it is more evident that living beings undergo changes over time.

With this information, we conclude that <u>all alternatives are evidence of evolution.</u>

<u />

Learn more about Evolution in brainly.com/question/2725702

4 0
2 years ago
The four main forces that drive evolution are mutation, natural selection, genetic drift, and gene flow. All of these forces can
Vinvika [58]

Answer:

Allele frequencies

Explanation:

The only component that is transmitted from generation to generation is the genetic material (genes), the fact that an individual leaves more descendants implies that their genetic variants (alleles) will be more represented in the next generation. The frequencies of the different alleles will change from one generation to another, and this change will be irreversible when the set of genes in the population is considered, since it is highly unlikely that a previous configuration will be returned in all gene variants. Hence, from a population point of view, evolution is ultimately a cumulative and irreversible change in the proportions of different gene variants in populations. The agents that change the allele (or gene) frequencies of populations, that is, factors of evolution, are mutation, genetic drift, migration, and natural selection. Mutation is a factor that increases genetic diversity. Natural selection is the process by which the gene frequencies involved with certain traits vary from generation to generation, since some variants of the trait have a greater capacity than others to survive and produce offspring. The mutation rate of a gene or DNA sequence is the frequency at which new mutations occur in that gene or sequence in each generation. In each generation there is a gene raffle during the transmission of gametes from parents to children which is known as genetic drift. In the absence of gene flow, gene drift will also lead to local differences in allele frequencies.

4 0
3 years ago
please help.i give a medle. In relation to natural gas, where is crude oil generally found? A. Crude oil is found above natural
nadya68 [22]
Crude oil is usually found below natural gas reservoirs, so the answer is C. Keep in mind, however, that this is not always the case, and that crude oil can be found above gas as well.
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3 years ago
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The forelimbs of mice, bats, and whales all have a similar bone structure. The similarities are an example of which type of stru
lawyer [7]
The Mitochondria structure
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3 years ago
Which is an example of minutiae in the study of fingerprints?
kirill [66]

Answer:

bridge,for,and eye or enclosure

7 0
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