The majority of the nitrogen in the air we breathe today was originally in what form?
A) amino acids
B) ammonia
C) hydrocarbons
D) halogens
E) atomic nitrogen gas emitted by the Sun.
Correct Answer:
Verified
Q3: What makes carbon dioxide a highly effective
Q4: If it were not for the greenhouse
Q5: The terrestrial planets, ranked in order of
Q6: The greenhouse effect is the
A) trapping of
Q7: In the absence of a greenhouse effect,
Q9: The nitrogen in Earth's atmosphere primarily came
Q10: Why does Mercury have so little gas
Q11: Which molecule moves with the fastest average
Q12: Based solely on mass and distance from
Q13: Earth has roughly _ times more atmospheric
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