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14 August, 20:24

Snowmobiles are causing problems in some of our national parks. Particulate matter, emitted by engines of vehicles, is a cause of haze and smog.

In the passage above, what is the meaning of the words particulate matter?

A.

soot

B.

haze

C.

smog

D.

particular

+1
Answers (1)
  1. 14 August, 20:54
    0
    A. Soot

    Explanation:

    Soot is the smoke or exhaust that comes from engines of vehicles. The text also says "cause of haze and smog" so it could not be B or C. D just doesn't make sense.
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