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