Coral Reefs Are Limited to Shallow Water, and There Is

question 31

Multiple Choice

Coral reefs are limited to shallow water, and there is a concern that rising sea levels will affect the reefs. This is because ______________.

• A) they require the lower salinity found in shallow waters
• B) there are more nutrients found in shallow water
• C) their symbiotic zooxanthellae require light to survive
• D) they require coastal upwellings of CO₂ in order to survive
• E) it is too difficult for them to build reefs in deeper water

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