The Big Bang occurred roughly ________ years ago.

A. 10 billion
B. 250 million
C. 13 billion
D. 4.6 billion
E. 750 million


Answer: C

Environmental & Atmospheric Sciences

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The United States exports some of the oil that it produces.

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

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Continental tropical (cT) air masses are associated with summer drought conditions in the southern Great Plains

Indicate whether the statement is true or false

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In what environments does low pressure- high tempereature metamorphism occur?

a) near magma but a shallow levels b) near magma but at deep levels c) under normal conditions of burial and heating d) in a subduction zone or accretionary prism

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How old is Earth?

a. 4.6 billion years old b. 4.6 million years old c. 460 million years old d. 4600 years old e. 46 billion years old

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