Which Statement Is NOT True About Living Coral Reefs

question 57

Multiple Choice

Which statement is NOT true about living coral reefs?

• A) Coral reefs are generally restricted to water temperatures of 18°C or less.
• B) Coral reefs are generally restricted to depths of 60 m below sea level.
• C) The calcite reef skeleton is built by algae.
• D) Algae provide oxygen that a key reef organism uses in order to secrete calcite.

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