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22 March, 05:56

Why has acid rain become an international problem?

A) increasingly taller chimneys

B) Reduced efforts to clean emissions

C) Thinner ozone layer

D) pollutants can be trace back to the country of origin

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Answers (2)
  1. 22 March, 06:09
    0
    The answer is A. I did this
  2. 22 March, 06:21
    0
    The answer is A. Increasingly taller chimneys.
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