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Can plant roots absorb CO2 that is in the soil?
Question Date: 2008-12-22
Answer 1:

Yes, plants can take up CO2 through their roots. Generally, this happens as plants absorb water. Soil water will not only contain water molecules (H2O) but will also have dissolved gases (including CO2) in it.

Answer 2:

Yes - and it's usually bad for plants to have CO2 in the soil, because they need oxygen during times when they can't get light (at night, for example).

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