Q:
Type of reef with an annular, circular or semi-circular coral reef surrounding a lagoon is called __________
Answer & Explanation
Answer: C) Atolls
Explanation: An atoll is essentially an annular, circular or semi-circular coral reef surrounding a central body of water that is as usual called a lagoon. In a typical atoll, the ring made of coral deposits may be continuous or discontinuous, more often broken at places.
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