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Courtship Is Often Dependent on What

question 74

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Courtship is often dependent on what?


Definitions:

Narcolepsy

A long-standing ailment involving extreme daytime sleepiness and unexpected sleep attacks.

Insomnia

A sleep disorder that is characterized by difficulty falling and/or staying asleep.

REM Sleep

A unique phase of sleep in mammals and birds, characterized by random movement of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.

Narcolepsy

A chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep.

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