How is $SO_2$ an air pollutant?

  • A
    It causes global warming.
  • B
    It causes acid rain and respiratory issues.
  • C
    It depletes the ozone layer.
  • D
    It causes soil erosion.

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$(2)$ Ozone in the air reacts with hydrocarbons to form ...... and ...... .
$(3)$ Harmful ultraviolet rays from the sun cause a type of skin cancer known as ...... .
$(4)$ Chlorofluorocarbon compounds are also called .......... .

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