Multiple Choice
Nitrogen (N2) is
A) a product of the radioactive decay of a form of potassium in the crust.
B) now measured at 20.946% by volume in the homosphere.
C) cycled through the environment via the activity of bacteria.
D) a key component of life,integrated into our bodies directly from the air.
Correct Answer:
Verified
Correct Answer:
Verified
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