Explain why Northern Europe's
waters and forests are in need of protection.

What does a movement along the demand curve show

Distance that the transcontinental railroad covered from omaha to san francisco.

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.