Ocean acidification is the decrease of ocean water pH caused by the absorption of excess atmospheric ____ by the oceans.
A. N2O (nitrous oxide)
B. CaCO3 (calcium carbonate)
C. H2CO3 (carbonic acid)
D. CO2 (carbon dioxide)
E. CO3 (carbonate ions)
Answer: D
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C) all of the structures in an ecosystem.
D) less information than a food chain.
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Indicate whether the statement is true or false.
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a. 20.1 billion years ago b. 15.2 billion years ago c. 13.8 billion years ago d. 5.60 billion years ago
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Indicate whether the statement is true or false