How does carbon become locked inside the earth?
A) tree roots expel carbon into the soil as they grow
B) humans use machines to pump carbon into large underground tanks
C) rocks become richer in carbon as time goes on
D) the carbon-rich bodies of plants and animals decay into the earth after they die
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How does carbon become locked inside the earth?
A) tree roots expel carbon into the soil...
A) tree roots expel carbon into the soil...
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