asked 5.0k views
3 votes
Which is an indicator of poor air quality?

salt
bacteria
fertilizer
smog

2 Answers

4 votes

Answer:

smog

Explanation: took the test on edge

answered
User Ankidaemon
by
8.4k points
3 votes
smog

formed by mixture of smoke and fog
answered
User SebTHU
by
8.4k points
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