Which of the following describes an example of how ocean acidification impacts aquatic communities?
A. Plankton cannot survive in overly acidic waters, so the shellfish that depend on their presence begin to die off as well, causing a chain reaction in the community.
B. Shellfish over-calcify their shells, meaning those organisms that depend on them for food must find other food sources.
C. Shellfish cannot reproduce in acidic waters, meaning their population sizes have decreased, negatively impacting others in the community that depend on their presence.
D. Shellfish cannot calcify their shells, meaning they are at an increased risk of predation, negatively impacting others in the community that depend on their presence.
Answer: D
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