AP Environmental Sciencehardmcq1 pt
Ocean acidification directly affects which organisms first?
A.Shell-building plankton and corals
B.Apex sharks
C.Kelp forests
D.Deep-sea vents
Explanation
Core Concept
Calcifiers need carbonate ions that acidification depletes — pteropods and corals are the canaries of ocean chemistry.
Correct Answer
AShell-building plankton and corals
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