The temperature was -5° F and then fell 8°f

What causes the cyclical changes in the appearance of the moon?

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

What is the driving force of evolution?