Rapid-eye movement (REM) sleep
a. becomes more frequent as infants grow older.
b. may stimulate the brain and foster growth of the nervous system.
c. makes up 90 percent of newborns' sleep.
d. involves steady heart rate, breathing, and brain activity.
b
Psychology
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a. age of mastery b. flaming fifties c. serene sixties d. sage seventies
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The ______ is the seat of awareness and reason
a. brain b. spinal cord c. peripheral nervous system d. endocrine system
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