An Ecosystem

question 55

Multiple Choice

An ecosystem

• A)should never be tampered with.
• B)can survive any human intervention.
• C)can be upset by human behavior.
• D)is independent of all other ecosystems.

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Definitions:

Regulating Body Temperature

The process by which living organisms maintain their internal temperature within a tolerable range, despite external changes.

Uric Acid

(uric acid) The principal nitrogenous excretory product of insects, birds, and reptiles; a relatively insoluble end product of protein metabolism; also occurs in mammals as an end product of purine metabolism.

Endothermy

The physiological capability of an organism to maintain a stable internal body temperature regardless of external environmental conditions.

Aves

A class within the animal kingdom that encompasses all birds, characterized by feathers, beak with no teeth, and the laying of hard-shelled eggs.