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Biology  /  Bio 2581  ·  Atom · ~20 seconds

"Plants Get Most of Their Mass From the Soil"

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Assuming a plant's mass comes mainly from soil overstates soil's contribution — most dry mass traces to carbon captured from air, not ground.

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A tree's trunk gains most bulk from carbon fixed out of atmospheric carbon dioxide, not soil lost around its roots.

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This entry states the popular assumption — Bio 2583 gives the reaction supplying most of a plant's mass.