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
Correct Answer:
Verified
Correct Answer:
Verified
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