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Sort of. While it uses nutrients that are derived from dead organic material, a lot of this organic material is actually decomposed by soil microbes, and those microbes allow those nutrients to become available to the plant in exchange for carbon that the plant puts down into the soil from the roots. But, grass does aid in decomposition by giving the food that those decomposer organisms need to function and to help build soil. Thus, in a way, grass, being a plant, actually helps build soil.

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7y ago

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