PLZ HELP I BEG YOU In paragraph two, what does the Secretary of War mean by saying, “they must gradually become extinct.”?

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 problem with blowing up large asteroids?

The cumberland plateau shares a ridge that juts into which two states