Abiotic because biotic is living. So abiotic is the opposite.
I think it's the first one: the red fox that inhabits farmlands and forests has a red coat, but it's relative, the kit fox, lives in a desert has a sandy-colored coat
Nitrogen is returned to the atmosphere during the nitrogen cycle in a process referred to as denitrification.
<h3>What is denitrification?</h3>
It is a process whereby nitrogen becomes mineralized from nitrogenous compounds. In other words, it is the reduction of nitrates to produce elemental nitrogen which is returned to the atmosphere.
Denitrification is a microorganisms-driven process. The nitrates are made to pass through a series of reactions with intermediate products before finally leading to the production of elemental nitrogen.
More on the denitrification process can be found here: brainly.com/question/13624886
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The original source of phosphorus in a terrestrial ecosystem is soil microorganisms. soil becomes deficient in phosphorous leading to ecosystem retrogression. phosphorous can be found in our body, it builds strong bones and teeth.
hope it helps!
