The answer is 1. When an organism is close enough to the desired environment, there is no need for mutation because of their offspring had run well adapted to the environment.

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The answer is 3. Extinction is the cessation of the last type of a specific individual or a group of species. This means that the capability to reproduce and survive are also lost. Since these organisms do not have the ability or have failed to undergo natural selection, the resulting population can become extinct due to their lack of adaptation.

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Species B and C are more closely related to each other than species A and C because as seen in the diagram, B and C’s ancestor is F as compared to the ancestor of A and C which is H.

The answer is 4. As seen in the diagram, K is seen as the common ancestor for both C and E species.

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The answer is 3. J and E, as seen in the diagram, is not seen close enough in the present time with the other species.

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The answer is 1. Natural selection is defined as the action by which organisms pass on offsprings the improved chance of surviving and reproduction. This is due to the differences in their phenotypes. Natural selection makes a variation of the organisms in order to survive.

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The answer is 3. The change in DNA of E. coli is the reason why E. coli becomes resistant to streptomycin. The ability of E. coli to adapt to its current environment involves the changing of DNA in a cell.

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The answer is 2. The difference or variety in DNA in the genetic makeup of a certain plant or animal is called genetic diversity. It is a way of organisms to adapt to an environment.

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The answer is 2. Pesticides can serve as natural selecting agents because this may trigger a mutation in the organisms in order for them to survive or be resistant to it after the mutation.

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The answer is 1. In the diagram, organism B presented with descendants, which in time became extinct. Organisms O and S were the only organisms that survived in the present.

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Changes in climate result in the extinction of a species because organisms might not have the ability to adapt to the changes in temperature or climate. They may have also failed to undergo natural selection in order for them to adapt to the changes.