Question

Calcium carbonates are incorporated into the shells of microscopic marine plants and animals and then participate into the ocean sediments this process is of which of the following
A. Sediment deposition
B. evaporate deposition
C. chemical precipitation
D. Biological precipitation

Answer 1

The answer is: D. Biological precipitation.

Biological precipitation is the deposition of minerals from solution by the agency of organisms .

Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass.

Ocean sediments originate from numerous sources:

1) biological activity (biogenous).

2) weathering and erosion of the continents (terrigenous/lithogenous).

3) volcanic eruptions (volcanogenous).

4) chemical processes (hydrogenous).

Calcium carbonate (CaCO₃) is made of calcium, carbon and oxygen atoms.