A worldwide concern about coral is that above-normal water temperatures cause coral to expel symbiotic algae that provide the coral polyps with nutrients. This event is called ________.
Fill in the blank(s) with the appropriate word(s).
Question 2
Calcium carbonate affects coastal landforms because it is produced in huge amounts by ________.
A) fish
B) seaweed
C) stream outflow
D) erosion of rocks
E) polyps