In a systems model, movement of energy or matter into the system is a(n):

a. subsystem.
b. output.
c. input.
d. closed system.


C

Environmental & Atmospheric Sciences

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The Cenozoic Era began approximately ________ years ago.

A. 4.55 billion B. 531 million C. 65 million D. 252 million E. 2.6 million

Environmental & Atmospheric Sciences

In colonial times, Brazil was a part of the __________, which functioned as a transportation conveyor, moving goods and people around the regions bordering the Atlantic Ocean

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

The Los Angeles smog problem is made much worse by ________.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

Rachel Carson's impact on environmental policy change was aided by support from

A) the American Medical Association. B) the EPA. C) industries producing DDT. D) public opinion.

Environmental & Atmospheric Sciences