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3 votes
Which of these buildings is most likely to have indoor air pollution?

2 Answers

1 vote
lol there arent any choicess?? hahaha lol
User Tim Kuehn
by
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2 votes

when heater is on for long time without having ventilation then carbondioxide will be converted into carbon monoxide and causes air pollution.

So according to above explanation,

C. A tightly sealed house with an unvented water heater, is the correct answer.

User Gabriel Milan
by
8.1k points

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