Adaptation

The process by which animals become better suited to their environment through the evolution of characteristics that improve their ability to survive and reproduce.

• physiological,​

• anatomical, and ​

• behavioural

These are internal body processes or functions that increase an animal's chances of survival. For example, the production of venom in snakes helps them incapacitate prey and defend against threats.

• Structural features of an animal's body—such as the wings of a bat or webbed feet of a duck—enhance their ability to survive in particular environments.​

Specific actions or patterns of activity, like bird migration or nocturnal living, help animals find food, escape predators, or cope with environmental extremes.

Variation refers to the differences between individuals within a species, which can manifest in appearance, behaviour, physiology, and dietary preferences.

Much of the variation between individuals is a result of differences in their genetic material (DNA), and many of these traits are passed from one generation to the next.

changes in lifestyle, diet, and environment.

is the process whereby organisms better adapted to their environment tend to survive and produce more offspring.

is the process by which variation creates a change in characteristics over many generations.