Pelagic clays contain lots of material that settles to the seafloor through the water column and are .
a. more than 30% biogenous material
b. less than 30% biogenous material
c. more than 30% hydrogenous material
d. more than 30% neritic material
e. less than 30% neritic material

Option (B)

Explanation:

The pelagic sediments usually refer to those sediments that are found at the deep ocean floor. These are clay that is mostly brownish or reddish in color. The sediments are usually very fine-grained and are deposited at a very slow rate, in many parts of the abyssal plain. These sediments are comprised of less than 30% of the biogenous materials such as the calcareous as well as siliceous particles. There occurs a lesser proportion of biogenous sediments, comprising the organic matter. Some of the examples of pelagic sediments include oozes, carbonate sediments.

Thus, the correct answer is option (B).

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.