Ocean acidification is taking place as the oceans absorb some of the additional carbon dioxide in the atmosphere.  What is the basic environmental problem that this creates?

A. causes the oceans to become even more saline, thereby reducing ocean circulation.
B. more difficult for marine organisms to secret their own protective shells.
C. increases the rate of evaporation of seawater.
D. makes it unsafe for humans to go swimming in the ocean.
E. all of the answers listed here.


Answer: B

Environmental & Atmospheric Sciences

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Identify and describe several international efforts to limit air pollution

What will be an ideal response?

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Innovations in agriculture have increased food supply. This has allowed human populations to grow to approximately ________ by the end of the agriculture period

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