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Home Q & A Board Science-Related Homework Help Health, Nutrition, and Food Sciences
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aleja98 aleja98
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6 years ago
Which percentage of the U.S. population live in areas with dangerous levels of air pollution?
 a. less than 10 percent
 b. about 30 percent
 c. more than 50 percent
  d. less than 20 percent
 e. nearly 90 percent
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nudelosrnudelosr
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#1
Posts: 381
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6 years ago
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aleja98 Author
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6 years ago
Smart ... Thanks!
Marctheshark
wrote...

Yesterday
You make an excellent tutor!
shimyshiguy
wrote...

2 hours ago
Good timing, thanks!
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