How is Cook Islands environmentally safe?

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.

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.

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."