An air quality index value of 35 on a particular day would indicate ____ conditions.
A) good
B) unhealthful
C) extremely hazardous
D) moderately hazardous
Correct Answer:
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Q16: The smoke in London smogs came primarily
Q17: Collectively,particles of soot,smoke,dust,and pollen are called
A) hydrocarbons.
B)
Q18: Which of the following is not true
Q19: A mixing layer is characterized by
A) enhanced
Q21: The so-called "ozone hole" is observed above
A)
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Q25: The term "ozone hole" refers to a
Q28: Photochemical smog is also termed _.
A)London-type smog
B)subsidence
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