About how many hours a day do horses typically sleep?
A) 10
B) 5.5
C) 8
D) 2
E) 14
Question 2
Adaptation theories of sleep assume that we are programmed to sleep at night
A) only if we expend energy during the day.
B) only if we expend more energy than we consume during the day.
C) only if we do not sleep during the day.
D) regardless of what we do during the day.
E) only if we eat three times per day.