Multiple Choice
What specialization do dolphins and whales show in their sleep?
A) Their sleep is composed entirely of REM sleep.
B) They sleep twice as long in summer as they do in winter.
C) They can sleep in half of the brain and not the other.
D) They take 5- to 10-minute naps each hour, all day.
Correct Answer:
Verified
Correct Answer:
Verified
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