What characterizes the calcite compensation depth (ccd), in terms of input and destruction (dissolution)?
a. the rate of destruction is greater than the rate of carbonate input.
b. the rate of destruction is equal to the rate of carbonate input.
c. carbonate dissolution is compensated for by increased carbonate input.
d. high levels of productivity are compensated for by greater rates of dissolution.
e. the rate of destruction is less than the rate of carbonate input.

b. the rate of destruction is equal to the rate of carbonate input.

Explanation:

At the Calcite Compensation Depth(CCD) the rate of addition of calcite and dissolution of the mineral is the same. Below this depth, all calcite minerals are dissolved.

The CCD occurs at a depth of 3000-4000m. It varies from places to places within the ocean. Other factors play important roles in determining the CCD. Some of the factors are temperature and pressure.

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