Which one of the following conditions are not favourable for the growth of coral reefs ?

Solution (By Examveda Team)

Fresh water are not favourable for the growth of coral reefs. Coral require fairly good amount of sunlight to survive. The ideal depths for coral growth are 45 m to 55 m below sea surface, where there is abundant sunlight available. Clear salt water: Clear salt water is suitable for coral growth, while both fresh water and highly saline water are harmful.