The level of ____ increases with depth which is a factor in the calcium carbonate compensation depth
a. Nitrogen
b. Oxygen
c. Carbon Dioxide
d. Ammonia
ANS: C
Carbon dioxide concentrations are higher at deeper depths. Contrastingly, oxygen levels decrease as
the depth decreases. This is true until middle depths of the ocean; then, oxygen levels begin to increase
again. Information can be found in the section Gases Dissolve in Seawater.
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Indicate whether the statement is true or false
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