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Discussion about the amount of co2 in the air


Problem: Over the last 200 years, the amount of CO2 in the air has: Group of answer choices increased because the amount of photosynthetic biomass has decreased. increased because the amount of fossil fuel burning has increased. remained constant. decreased because of global warming. Both a) and b) are correct. Need Assignment Help?

 

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Other Subject: Discussion about the amount of co2 in the air
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