In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent. Options: A . &nbspNitrogen, oxygen B . &nbspHydrogen, oxygen C . &nbspOxygen, hydrogen D . &nbspNitrogen, water vapor E . &nbspHydrogen, helium

In a volume of air near the earth's surface, ____ occupies 78 percent and ___

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In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent.

Answer: Option A

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