How Much CO₂ Is Pulled Out of the Atmosphere Each

question 34

Multiple Choice

How much CO₂ is pulled out of the atmosphere each year by various life forms?

• A)about 63 million cubic yards,measured at STP (standard temperature and pressure)
• B)about 63 billion molecules
• C)about 63 thousand tons,when measured at STP (standard temperature and pressure)
• D)about 63 billion tons

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