What is used to contaminate the environment with man made waste

What is the famous rainforest in costa rica called?

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.

Which of the following is the main purpose of using an anchored network of booms which funnel debris to a collection area?