About how many evacuation centers were washed away? In the Tsunami of March 11, 2011.

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.

Advantages and disadvantages of mitigation and adaptation

How did the government of egypt change the natural state of the nile river?