What is difficult to determine in the process of adaptation unless there is a closely related species to which you can compare findings?

It is difficult to determine the process of adaptation unless there is a reference in from the closely related species. The process of adapting certain change in the body of an organism to survive in a better way is known as adaptation.

There should be some reference to observe the change. The adaptation can be observed only when two organism from the same species are compared.

One of them will have some adaptation and the other will not have adaptation. So , in this way we can determine the adaption.

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