What Characteristic is Unlikely to Be Correlated with Coral Reefs

Question

What characteristic is unlikely to be correlated with coral reefs?  
A) Develop in warm, clear waters near coasts or tropical islands
B) Found between 25 degrees north and south
C) Comprised of wave-resistant formations
D) Are the least diverse marine ecosystem
E) Consist primarily of secreted calcium carbonate

Accepted Answer

Coral reefs are actually one of the most diverse marine ecosystems, so option D is unlikely to be correlated with coral reefs. The other options are characteristic of coral reefs.