Because Most Birds Travel Through the Air at High Speeds

question 60

Multiple Choice

Because most birds travel through the air at high speeds, they must have

• A) a crop and a gizzard.
• B) highly sensitive sensory systems.
• C) complex songs.
• D) eggs and no placenta.
• E) a three-chambered heart.

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Definitions:

Key Factor

An element that is crucial in determining the outcome or success of something.

Aspect Of Behavior

Specific element or dimension that constitutes part of the overall nature or actions of an individual.

Physiological Conditions

The state of the various systems and functions of the body, often relating to health and disease.

Biological Conditions

The physiological and genetic status and conditions that influence the life and development of an organism.