Which of the following is considered a variable gas in Earth's atmosphere?
A)Water vapor
B)Nitrogen
C)Oxygen
D)Argon
E)Helium

Name: Which of the following is considered a variable gas in Earth's atmosphere? A)Water vapor B)Nitrogen C)Oxygen D)Argon E)Helium
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Question

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Water vapor is considered a variable gas because its concentration in the atmosphere can change significantly in different places and times, unlike the relatively constant concentrations of gases like nitrogen, oxygen, and argon.

Which of the Following Is Considered a Variable Gas in Earth's