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20 June, 14:40

Air Pollution first a widespread problem

A) about 100 years ago

B) during the 1700s

C) 100,000 years ago

D) during the 1200s

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Answers (2)
  1. 20 June, 14:47
    0
    B. during the 1700's
  2. 20 June, 14:49
    0
    If you are talking about the first air pollution problem its is A, almost about 100 years ago.

    1955
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