Compare the Forearms of Alligators and Tiktaalik

question 18

Essay

Compare the forearms of alligators and Tiktaalik.

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Definitions:

GABA

Gamma-aminobutyric acid, a neurotransmitter in the brain that plays a key role in regulating nerve cell activity and inhibiting over-excitement.

Hidden Observer

A concept in hypnosis suggesting a part of the mind is aware of everything during hypnosis, even if another part is not conscious of it.

Mind

The set of cognitive faculties that enables consciousness, perception, thinking, judgment, and memory; a person's mental processes and state.

Stimulants

A category of drugs that speed up activity in the central nervous system, suppress appetite, and can cause a person to feel more awake, alert, and energetic; also called “uppers.”