Since the Passing of the Clean Air Act Amendments in 1990,the

question 13

Multiple Choice

Since the passing of the Clean Air Act amendments in 1990,the aggregate emissions from the 6 common pollutants have

• A)decreased by about 40% even as GDP and population increased.
• B)stayed the same despite more industry.
• C)increased as GDP increased.
• D)decreased because energy used has declined.
• E)decreased slightly due to the increase by 64% in GDP.

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Definitions:

Down Syndrome

A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by developmental and intellectual delays.

Organogenesis

The phase during embryonic development where organs are formed from the primary germ layers.

Rubella

A contagious viral infection best known by its distinctive red rash, also called German measles.

Rh Negative

A blood group classification indicating the absence of the Rh(D) antigen on the surface of red blood cells.