The carbon and nitrogen cycles are related to one another because:
d. All of these choices are correct.
Chemically, carbon is an element with the symbol C and atomic number 6. Carbon, which is categorized as a nonmetal, is a solid at ambient temperature.
Since it makes up around 78% of the air humans breathe, nitrogen is not poisonous. It does not have a smell, yet it is not safe. chemical that can suffocate a person to death or render them unconscious. Oxygen in the air is replaced by simple aphyxiants like nitrogen.
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