AP Environmental Scienceeasymcq1 pt
Ocean acidification threatens shellfish because
A.lower pH dissolves the carbonate they need for shells
B.warmer water melts their shells
C.acid water blocks sunlight
D.it poisons them with CO₂ gas
Explanation
Core Concept
Acidity shifts the carbonate balance, making CaCO₃ shells harder to build and easier to dissolve — oysters and corals are first in line.
Correct Answer
Alower pH dissolves the carbonate they need for shells
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