An action or event that evokes a specific functional reaction in an organ or tissue

The way in which a animal or person acts in response to a particular situation or stimulus

The tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physcological process

The turning of all or part of an organism in a particular direction in response to stimulus

Does variation mean teh condition of a animal or plant spending the winter in a dominant state

The condition of period of an animal or plant spending the winter in a dormant state

The breeding of plants and animals to produce desirable traits

Teh process whereby organisims better adapted to their environment tend to survive and produce more offspring.

A change by which an organism or species becomes better suited to its enviornment