Which of the following rock is an example of an extremely rapid rate of cooling?

A. granite
B. basalt
C. obsidian
D. rhyolite


Answer: C

Environmental & Atmospheric Sciences

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Fill in the blanks with correct word

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Darwin suggested that the mechanism by which evolution proceeds is ________. Fill in the blank(s) with the appropriate word(s)

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What would you suspect to be the cause of dramatic differences in the sediment load per square kilometer between two streams with very similar climates?

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