Transportation is the source for 77 percent of this pollutant

A) carbon monoxide
B) nitrogen oxides
C) sulfur dioxide
D) volatile organic compounds


Answer: A

Environmental & Atmospheric Sciences

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Which of the following is not one of the standard soil horizons?

A) A horizon B) O horizon C) C horizon D) B horizon E) D horizon

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In clear weather, the air next to the ground is usually ____ than the air above it at night, and ____ than the air above it during the day

A) cooler; warmer B) colder; colder C) warmer; colder D) warmer; warmer

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Besides Afghanistan, death rates in Central Asian states are in the single digits per 1,000 population

Indicate whether the statement is true or false

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There are no sediments on the deep seafloor

Indicate whether this statement is true or false.

Environmental & Atmospheric Sciences