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14 September, 22:36

Why do some states require emissions testing? A. to reduce air pollution B. to reduce water pollution C. to conserve energy resources D. to increase fuel efficiency

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Answers (2)
  1. 14 September, 22:42
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    A. to reduce air pollution

    Explanation:

    air pollution is often caused by the gases formed by vehicles, so A would be your answer
  2. 14 September, 23:03
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    Answer: A. to reduce air pollution
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