ICSE Class 7 Geography
Question 5 of 15
Australia — Location, Political Divisions and Physical Features — Question 5
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Question Question 4(c)
How is coral reef formed?
Coral reef is formed by tiny sea creatures called coral polyps. They live in shallow, warm and salty water of the sea and secrete calcium carbonate which on the death of the coral polyps, remains clinging to the rock. As time passes, a great ridge-like structure called coral reef is formed.