The dark areas on the map show the distribution of coral reefs around the world. What explanation best describes why the distribution of coral reefs is limited to the areas shown on the map? A. Competition for space is lowest in waters along the equator.
B. Equatorial waters provide some of the clearest water for symbiotic algae to produce energy.
C. Predation is lowest in areas along the equator because of increased rates of decomposition.
D. The corals need the strong water currents found here in order to find sufficient mates.