Discussion
Organic deposits made by living or dead organisms that form rock elevation like a ridge are known as
Answer: C
Organic deposits made by living or dead organisms that form a rock elevation like a ridge are known as reefs. Coral polyps build up calcareous skeletons that form ridges, close to the ocean surface.
Corals are the organisms themselves, not the ridge. 'Conyons' is not a landform of this kind, and guyots are flat-topped submerged volcanic seamounts, not organic ridges.
Reefs are built over a long time by coral polyps and algae, which deposit calcium carbonate. Fringing reefs, barrier reefs and atolls are the main types, and they grow in warm clear shallow water of the tropics, usually where the temperature stays above about 20 degrees Celsius.
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