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monkeybee765 monkeybee765
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6 years ago
Which of the following is a natural source of air pollution?
 
  a. dust blown by wind
  b. Wildfires
  c. Volcanoes
  d. volatile organic chemicals released by some plants
  e. all of these answers
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chelle2695chelle2695
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6 years ago
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monkeybee765 Author
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6 years ago
You make an excellent tutor!
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Yesterday
Thanks for your help!!
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2 hours ago
Smart ... Thanks!
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