I'm not sure how to do these.

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.

Heyi am new to are you all americans? ( just want to know , i don't mean any offence ) ?

Briefly describe in your own words the pros and cons of the changes people have made to the land in south florida.