36. What is adaptation?

Any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment. a form or structure modified to fit a changed environment.

An adaptation is a change by which an organism becomes better suited to its environment.

An example of an adaptation is a polar bear's white fur, which it uses to better camouflage itself in its snowy environment.