At CO levels of 100 ppm or less,
A) most humans develop a headache and can make errors on simple tests.
B) there is no noticeable health effect.
C) the human bloodstream is unaffected.
D) carbon monoxide can contribute to acid rain.
E) it has a noticeable odour.
Correct Answer:
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A)forms acid rain.
B)is
Q71: Photochemical reactions produce
A)principally sulfur dioxides.
B)particulates such as
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A)coal
Q76: Temperature inversions occur
A)when surface temperatures are higher
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A)replaces
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