Question

air quality index indicates the porportision . (1) ozone .
(2) so2
(3) co
(3) all of these​

Answer 1

i think its 3)

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Answer 2

Answer:

The air quality index (or AQI) is a number that represents the amount of pollution in an area day by day, and in the United States is measured on a scale from 0 to 500.

option(3)

Explanation:

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