A mineral is a chemical substance and a rock is not
It increases the average household income by 36%
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The living microbial biomass includes<span> the microorganisms responsible for decomposition (breakdown) of both plant residues and active </span>soil organic matter<span> or detritus. Humus is the stable fraction of the </span>soil organic matter<span> that is formed from decomposed plant and animal tissue. It is the final product of decomposition.</span>
Yes it is within the past 500 years.
ps. could i please get a brainliest please