According to the EPA, what are the three most dangerous indoor air pollutants?

A. tobacco smoke, formaldehyde, and methane
B. tobacco smoke, sulfur dioxide, and ultrafine particles
C. tobacco smoke, formaldehyde, and radon-222
D. carbon dioxide, sulfur dioxide, and methane
E. carbon monoxide, nitrogen dioxide, and radon-222


Answer: C

Environmental & Atmospheric Sciences

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Why is indoor pollution still such a large problem in developed nations? What are the most dangerous indoor pollutants in developing and developed nations?

What will be an ideal response?

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It is believed the most prominent means by which humans add CO2 to the atmosphere is by ________.

A) the burning of coal and other fossil fuels B) renewable energy C) nuclear electric power D) solar power

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Which of the following statements about coastal and inland temperatures are correct? Choose all that apply.

A) During the course of the year, the highest monthly average temperature would occur in a coastal city. B) During the course of the year, the lowest monthly average temperature would occur in a coastal city. C) During the course of the year, the lowest monthly average temperature would occur in an inland city. D) During the course of the year, the highest monthly average temperature would occur in an inland city.

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Indicate whether the statement is true or false

Environmental & Atmospheric Sciences