Your aunt jean whos a geologist has a rock collection from her hiking trips. she has mostly large, round rocks that look like they have been worn down by something scraping against them. where do you think aunt jean found most of her collection open study

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.