Through geologic history reefs have episodically been devastated by mass extinction. Today corals are primary reef builders, but in the past other groups formed important parts of reef communities. These groups include:

Question

Quizplus · Accepted Answer

The Answer of Through geologic history reefs have episodically been devastated by mass extinction. Today corals are primary reef builders, but in the past other groups formed important parts of reef communities. These groups include:

Through Geologic History Reefs Have Episodically Been Devastated by Mass