Answer:
A source from which organisms generally take elements is called exchange pool (option B).
Explanation:
Options for this question are:
- <em>Food web.</em>
- <em>Exchange pool.</em>
- <em>Reservoir.</em>
- <em>Biotic community.</em>
The term exchange pool is related to the biogeochemical cycles that exist in nature, referring to the source from which elements present in the environment become part of living organisms.
<u>Exchange pools are the biotic components</u> -like animals and plants- of an ecosystem, which determine the passage of elements between living beings. An element can remain as a reservoir (abiotic) in the soil, and then be incorporated into the exchange pool.
Answer: phytoplankton
Explanation: shrimp and krill are primary consumers. Primary consumers rely on producers for food. Phytoplankton are producers.
I believe the answer is B because the egg becomes fertilized by the sperm inside the body.
Because alpha ray can penatrate the body deeper than other x rays and do more damage
