A dam created with waste rock from surface mining is called a(n) . A)
interglacial period
B)
valley fill
C)
placer deposit
D)
sanitary landfill
E)
ore deposit

Which statements describe continental crust? select the three correct answers. a-it is formed in all parts of the continents. b-it is made mostly of volcanic rock. c-it is destroyed by melting near the top of the mantle. d-it is less than 10 km thick. e-its ages ranges from very young to more than 4 billion years old.

Which of the following types of stars had the smallest initial mass? which of the following types of stars had the smallest initial mass?

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