Which of the Following Is True of Gases in the Heterosphere

question 7

Multiple Choice

Which of the following is true of gases in the heterosphere?

• A)The hydrogen,helium,oxygen and nitrogen are well mixed.
• B)Hydrogen and helium occur at the top of the heterosphere and oxygen and nitrogen dominate in the lower heterosphere.
• C)Oxygen and nitrogen occur at the top of the heterosphere and hydrogen and helium dominate in the lower heterosphere.
• D)Nitrogen occurs at the top,followed in descending order by helium,oxygen and hydrogen.
• E)Oxygen occurs at the top,followed in descending order by hydrogen,helium,and nitrogen.

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