Only one side of the Moon faces Earth during a single twenty-seven-day lunar revolution. This suggests that the Moon rotates
A) Once a day
B) Once a year
C) Once every lunar cycle
D)Twice every cycle

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust