Environmental Sciences, asked by TanyaSharma926, 1 year ago

Please help What is Reefs

Answers

Answered by nesthangam
2
The formal definition of a reef is a ridge of rock or shingle or sand at or just below the surface of the water. 
Answered by paras
1
actually its coral reef and coral reefs are diverse underwater ecosystems held together by calcium and reef-dwelling corals have a symbiotic relationship with algae.
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