Dinoflagellates Are Important to Coral and Coral-Dwelling Animals Because They

Multiple Choice

Dinoflagellates are important to coral and coral-dwelling animals because they

A) provide energy in the form of organic molecules that is used by coral animals.
B) provide shelter for the fast-growing seaweeds associated with coral.
C) produce carbon dioxide (CO₂) and nitrogen for coral.
D) are toxic to species that prey on reef-dwelling fish.