<span>Survival of at least a few members of a population after a major environmental change is most dependent on 3) variations in many different traits in many individuals in the population.
Variation is important for a species which wants to survive huge changes in the environment. If they cannot adapt to their new surroundings, they won't be able to survive. This is where variation comes in - it enables a species to develop new techniques and traits necessary for survival.
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The wings of bats and insects are analogous structures.
what is the analogous structure
analogous structure indicates structurally they are different but functionally they are the same.
In the case of bats and insects, the wing's structure originated from different structural origins, but they perform common functions like flying. means they are structurally different but functionally the same. that is called an analogous organ.
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