Question

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

Answer 1

A. Soot

Step-by-step 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.

Answer 2

Soot

Step-by-step explanation: