Refer to the Figure

Multiple Choice

Refer to the figure. A major difference between carbon cycling on land and at sea is that on land

A) most of the carbon flux is due to human activity.
B) most of the carbon flux is ultimately stored in soils.
C) there is very little storage of carbon, compared with oceans.
D) all carbon participates in cycles, while little participates at sea.
E) the flux of carbon between air and land is less balanced than at sea.