Question

Which of the following forms the reservoir pool of biogeochemical cycle?
$1$. Atmosphere/rock
$2$. Plants
$3$. Animals
Select the correct answer using the codes given.

• A. $1$ only
• B. $1$ and $2$ only
• C. $2$ and $3$ only
• D. $1,2$ and $3$

Answer 1

Answer: (A)

$1$ only

Biogeochemical cycle is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. There are biogeochemical cycles for carbon, oxygen, nitrogen, phosphorus, sulfur, and water. At particular stages of their cycling, any of the elements may be stored and accumulated within a particular place for a long period time (e.g. within a rocky substrate, or in the atmosphere). These places are called “sinks” or “reservoirs”.