7. In a short sentence explain why the following statement regarding the water cycle is correct: “The total amount of water on Earth does not change.”

How many square miles is the big island of hawaii

Why did other countries want to have a part in what was occurring in southwest asia?

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.