AP Environmental Scienceeasymcq1 pt
Coral bleaching occurs when
A.heat stress expels the corals' symbiotic algae
B.acid rain bleaches the reef
C.pollution paints the coral white
D.corals migrate to cold water
Explanation
Core Concept
Warm water makes corals eject their colorful zooxanthellae, leaving white skeletons — prolonged bleaching kills the reef.
Correct Answer
Aheat stress expels the corals' symbiotic algae
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