Photochemical smog is related with the pollution of

Options :
  1. soil
  2. water
  3. sound
  4. air
Answer and Explanation :-

Answer: Option 4

Explanation:

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Most of us won't see one another after graduation, and even if we do it will be different. We'll be different. We'll be adults--cured, tagged and labeled and paired and identified and placed neatly on our life path, perfectly round marbles set to roll down even, well-defined slopes.
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