Which of these gases are most abundant in the Earth's atmosphere today?
A) nitrogen and oxygen
B) argon and oxygen
C) hydrogen and oxygen
D) methane and oxygen

Name: Which of these gases are most abundant in the Earth's atmosphere today? A) nitrogen and oxygen B) argon and oxygen C) hydrogen and oxygen D) methane and oxygen
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Question

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Nitrogen and oxygen are the most abundant gases in the Earth's atmosphere, with nitrogen making up about 78% and oxygen about 21%.

Which of These Gases Are Most Abundant in the Earth's