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If our planet were without its ocean, but otherwise the same as it is today, surface temperatures would be ____.


A) more extreme
B) less extreme
C) about the same as we know today
D) impossible to tell without more information

E) C) and D)
F) B) and C)

Correct Answer

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A zone in which the ocean's salinity changes rapidly with increasing depth is called a ____.


A) a halocline
B) a thermocline
C) a pycnocline
D) a metacline

E) C) and D)
F) A) and C)

Correct Answer

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Residence time is the ____.


A) same for all elements in the ocean
B) average length of time an element spends in the ocean
C) length of time it takes an element to dissolve in the ocean
D) same as mixing time

E) A) and C)
F) B) and C)

Correct Answer

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Describe how carbon dioxide acts as a buffer in seawater.

Correct Answer

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The proportion of carbon dioxide gas in ...

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The deepest thermoclines can be found ____.


A) in temperate zones
B) in Antarctica
C) in the tropics
D) anywhere, depending on water salinity

E) A) and D)
F) A) and B)

Correct Answer

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