In order for metamorphism to occur, rocks must:

a. melt
b. partially melt
c. be subjected to extremely high pressure
d. none of the above


d

Environmental & Atmospheric Sciences

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Of the 89 naturally occurring elements, how many are needed to account for 99.7 percent of the mass of Earth's crust?

A) 42 B) 21 C) 12 D) 10

Environmental & Atmospheric Sciences

The ________ cloud may have an "anvil head."

A) nimbostratus B) cumulonimbus C) cirrus D) altostratus E) cirrostratus

Environmental & Atmospheric Sciences

The largest number of both legal and undocumented immigrants to the United States come from what country?

A) Cuba B) Mexico C) the Philippines D) South Korea E) Dominican Republic

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What landform is NOT associated with a strike-slip fault?

A. linear ridge B. offset stream C. horst D. scarp E. sag pond

Environmental & Atmospheric Sciences