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The approximate composition of the atmosphere is shown in the pie-chart. The two major components are nitrogen and oxygen. Which ratio is CLOSEST to the ratio volume of nitrogen : volume of oxygen in the air?
A) 1:3
B) 2:1
C) 2:3
D) 4:1
Answers: 2
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Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of
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The approximate composition of the atmosphere is shown in the pie-chart. The two major components ar...
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