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I am a student of Botany and need to write an essay on the topic what are some of the important facts On Reefs?
Tags: Reefs
Report (0) (0) | 12 years, 8 month(s) ago
Coral reefs are underwater structures made from calcium carbonate secreted by corals. These are mostly located in tropical and subtropical areas. Coral reefs are the places where hundreds of colorful species live. Coral reefs may vary in size and shape. Coral reefs grow less than three centimeters each year, so it takes many years to form a large reef. Coral reefs have occurred for more than 200 million years. One of the largest reefs is the Great Barrier Reef which is 1616 miles long.
Latest activity: 13 years ago. This question has 2 answers.