The Earliest 88 Percent of Geologic Time Is Represented by the Time

question 43

Multiple Choice

The earliest 88 percent of geologic time is represented by the time span informally called the ________.

• A)Paleozoic
• B)Precambrian
• C)Mesozoic
• D)Phanerozoic

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Definitions:

Skeletal Muscles

Muscles that are attached to bones and are responsible for voluntary movements of the body.

Inhibitory Neurotransmitter

A type of chemical messenger that decreases the likelihood of a neuron firing and thus inhibits neural activity.

Serotonin

A neurotransmitter involved in various functions including mood regulation, sleep, and appetite, often referred to as a "feel good" chemical in the brain.

GABA

A neurotransmitter in the brain that plays a key role in regulating nerve cell activity and inhibiting many of the signals in the central nervous system.