Answer:
"Nitrogen fixation is carried out naturally in soil by microorganisms termed diazotrophs that include bacteria such as Azotobacter and archaea. Some nitrogen-fixing bacteria have symbiotic relationships with plant groups, especially legumes. ... Nitrogen fixation occurs between some termites and fungi."
Explanation:
Answer:
I think it is a pure substance, not 100% though.
Prokaryotic cells do not have a nucleus, animals cells have a nucleus and plant cells have a nucleus. Animal cells and plant cells are both eukaryotic.
Answer:
Kidneys
The paired kidneys are mostly considered the main organs of excretion. The main function of the kidneys is the removal of excess water and wastes from the bloodstream by the production of the liquid waste like urine