According to most estimates, Earth is approximately

A. 4.6 million years old.
B. 4.6 thousand years old.
C. 4.6 billion years old.
D. 4.6 trillion years old.


Answer: C

Environmental & Atmospheric Sciences

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Most large earthquakes in the United States are interplate earthquakes

Indicate whether the statement is true or false

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Actual evapotranspiration (ACTET) is determined by

A) deficit subtracted from Precipitation total. B) surplus subtracted from Precipitation total. C) surplus subtracted from Potential Evaporation. D) deficit subtracted from Potential Evaporation.

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What is NOT true about aeolian transportation?

A. Greater wind speeds can suspend more dust. B. It is most effective at carrying the finest particles. C. It takes the form of massive dust storms. D. Its smallest particles move through traction. E. Its larger particles move through saltation.

Environmental & Atmospheric Sciences

During Phase 4 of migration to the United States (1920-1970), where did the majority of immigrants come from?


A) England and Africa
B) Ireland and Germany
C) Southern and Eastern Europe
D) Canada and Latin America
E) Latin America and Asia

Environmental & Atmospheric Sciences