Answer:Inorganic compound, any substance in which two or more chemical elements (usually other than carbon) are combined, nearly always in definite proportions. Compounds of carbon are classified as organic when carbon is bound to hydrogen.
Explanation:
I believe the answer is choice D. Hope this helps!!!
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Biomass decays and produces gases such as nitrogen and very small amount of helium. in many places it is used to produce energy by comustion.it's mass becomes less and a layer of humus type organic substance is left on the soil....if i'm not incorrect :)
I want to say yellow because it's basically the same color or car lights
trees do not fix N2 from air they fix oxygen with the help of N2 fixing bacteria . so trees do not fix N2