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What Should Be True of Fossils of the Earliest Tetrapods

question 62

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What should be True of fossils of the earliest tetrapods?


Definitions:

Relax

To become less tense or anxious, or to make something less taut or firm, often in the context of stress relief or leisure activities.

Imagine

The ability to form new images and sensations in the mind that are not perceived through the five senses.

Extinction

In psychology, the gradual weakening and eventual disappearance of a conditioned response when the reinforcement is no longer presented.

Shock-Avoidance Response

A learned behavior in which an individual or animal acts to avoid or prevent an anticipated painful or unpleasant stimulus.

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