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reubank reubank
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6 years ago
Photochemical smog forming in warm climates is what color?
  a. red
  b. brown
  c. yellow
  d. black
  e. gray

Question 2

Industrial smog in cold, wet winters is what color?
  a. red
  b. brown
  c. yellow
  d. black
  e. gray
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leticia1977leticia1977
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6 years ago
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