Please Define the Following Key Terms

question 51

Essay

Please define the following key terms. Show Who? What? Where? When? Why Important?
-Sumerians

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Definitions:

Hemisphere

Half of the terrestrial globe or celestial sphere, especially one of the halves into which the earth is divided, either north-south by the equator or east-west by a meridian.

Phencyclidine (PCP)

Substance that produces euphoria, slowed reaction times, and involuntary movements at low doses; disorganized thinking, feelings of unreality, and hostility at intermediate doses; and amnesia, analgesia, respiratory problems, and changes in body temperature at high doses.

Perceptual Changes

Alterations in the way an individual interprets or experiences sensory information.

Nicotine

A stimulant drug found in tobacco products that is both highly addictive and capable of causing both psychological and physical dependency.