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Air pollution in US and Canadian cities is caused mostly by __________.

A.
clear-cutting forests for timber
B.
releasing emissions from vehicles and industry
C.
dumping runoff from farms into rivers
D.
harvesting minerals from mines
plz hurry

User EyuelDK
by
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2 Answers

13 votes

Answer:

Option B) releasing emissions from vehicles and industry.

User Marek Sebera
by
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12 votes

Step-by-step explanation:

its B.releasing emissions from vehicles and industry

User George Eracleous
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