The two most important languages in South America are

A) Dutch and English.
B) English and Spanish.
C) French and Spanish.
D) Portuguese and Spanish.
E) Creole and Portuguese.


Answer: D

Environmental & Atmospheric Sciences

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The Canadian Shield is one of the most ________-rich areas on the Earth's surface

A) Mineral B) Fish C) Lumber D) Fur

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The type of sediment that moves by saltation is:

a. dissolved load b. suspended load c. combined load d. bed load

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The Gulf Stream forms eddies, or rings, with cold water cores at the ________ edge of the Gulf Stream current.

A. western B. southern C. northern D. eastern E. either eastern or western

Environmental & Atmospheric Sciences

How does an open system contrast with a closed system?

• An open system is open to scientific scrutiny, while a closed system is not. • An open system is able to convert energy from one form to another, while a closed system is not able to do so. • An open system is prone to collapse, while a closed system is typically more sustainable in the long term. • An open system exchanges energy and/or materials with its surroundings, while a closed system does not.

Environmental & Atmospheric Sciences