Reef-Building Corals Grow Only in Shallow Water Because

question 20

Multiple Choice

Reef-building corals grow only in shallow water because:

• A)Salinity varies less in shallow water.
• B)Zooxanthellae need light for photosynthesis.
• C)Calcium carbonate is only available in shallow water.
• D)Nutrients concentrate in shallow water.
• E)Shallow water contains more dissolved organic matter (DOM).

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