What are the principal gaseous components of the Earth's atmosphere? Where do scientists believe these gases came from?

What will be an ideal response?


Answers may vary.

Environmental & Atmospheric Sciences

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A. They are both examples of compounds. B. They are both examples of heterogeneous mixtures. C. They both contain elements. D. nothing

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A society in which a majority of the workers are engaged in the tertiary sector is said to be a(n) ________ society

A) pre-industrial B) industrial C) post-industrial D) communist

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Some officials in Russia turn to corruption to avoid this widespread problem:

A) murder B) deportation C) alcoholism D) poverty

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The Quincy Library Group became famous for creating a plan for the management of what resource?

A) Forests B) Water C) Oil D) Gold

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