Most Coral Reefs Are Located in Shallow Water Because Below

question 45

Multiple Choice

Most coral reefs are located in shallow water because below this depth,_____.

• A)there is not enough oxygen
• B)water temperatures are too cold for coral to grow
• C)water currents are too fast for coral to colonize
• D)sunlight levels are too low to sustain the photosynthetic algae living within the coral exoskeleton

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