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Carbon Dioxide (CO2) Concentration in the Atmosphere Increased from 280

Question 29

Multiple Choice

Carbon dioxide (CO2) concentration in the atmosphere increased from 280 parts per million (ppm) in 1750 to 400 ppm in 2013. How has this change affected the oceans?


A) movement of CO2 from the ocean to the atmosphere has decreased the pH of ocean waters
B) movement of CO2 from the atmosphere to the ocean has decreased the pH of ocean waters
C) movement of CO2 from the ocean to the atmosphere has increased the pH of ocean waters
D) movement of CO2 from the atmosphere to the ocean has increased the pH of ocean waters

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