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Some carbon
absorbed by plants is deposited in the
soil. Large quantities have been trapped over millennia.
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No-till farming
practices are cited as one means of keeping carbon sequestered in the soil.
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So far this
carbon sink technology is fraught with uncertainty. How much organic material left on the land is incorporated
in soil? How long will it stay there? Will soil reach an equilibrium of
carbon content and then absorb no more?
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