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Whales and Dolphins Have Evolved Their Sleep Patterns So They

Question 65

Multiple Choice

Whales and dolphins have evolved their sleep patterns so they


A) don't need to breathe at night.
B) only sleep in half of their brains at a given time.
C) sleep 20 hours per day during the first month of life.
D) shut down brain activity while sleeping to save energy when they don't sense danger.

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