More than __________ minerals naturally occur on Earth.

A. 2,000
B. 5,000
C. 7,000
D. 9,000


Answer: A. 2,000

Environmental & Atmospheric Sciences

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Spoil banks and tailings piles

A. are unsightly but not hazardous. B. typically weather very rapidly. C. can be eliminated by putting them back into the underground mines from which they came. D. All of the choices are correct.

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Compared to cyclones, anticyclones are

A) wetter. B) of shorter duration. C) more cloudy. D) windy. E) none of the above

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A nontransmissible disease is caused by something other than a living organism.

Answer the following statement true (T) or false (F)

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Minerals that crystallize directly from seawater are examples of ________

A) biogenous sediment B) hydrogenous sediment C) terrigenous sediment D) both terrigenous and biogenous sediment

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