The Primary Atmospheres of the Planets Are Made Mostly of

question 9

Multiple Choice

The primary atmospheres of the planets are made mostly of

• A) carbon and oxygen.
• B) hydrogen and helium.
• C) iron and nickel.
• D) nitrogen and argon.

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Definitions:

Economic Expansion

The situation that occurs when an economy is growing and people are spending more money; their purchases stimulate the production of goods and services, which in turn stimulates employment.