One of the signs that sleep is necessary is that all living creatures . A. are harmed by lack of sleep
B. can put off sleep for a time
C. avoid sleep as much as possible
D. can sleep longer than necessary

15 min. leftread about what these classmates had for lunch and identify the missing terms. mark eats whole-wheat pasta mixed with vegetables for lunch. for dessert, he has a cherry popsicle. the whole-wheat pasta and fresh vegetables will be digested (faster than, slower than, at the same rate as) the popsicle.