Several Related Bird Species Live in a Desert

question 57

Multiple Choice

Several related bird species live in a desert.One species is much smaller than the other species.This small species nests in holes in cacti.Because the bird is so small,it can easily squeeze between the spines of the cactus and create a well-protected nest.This is an example of

• A) genetic drift.
• B) mutation.
• C) natural selection.
• D) gene flow.

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Definitions:

Primary Drives

Basic biological needs such as thirst or hunger that motivate behavior to satisfy those needs.

Physiologically Based

Pertains to the underlying physiological or biological mechanisms of an organism or process.

Anorexia Nervosa

A psychological and potentially life-threatening eating disorder characterized by self-starvation and excessive weight loss.

Bulimia

An eating disorder marked by periods of binge-eating followed by behaviors to prevent weight gain, such as self-induced vomiting or excessive exercise.