BiologyWhich of the following statements is incorrect?

Which of the following statements is incorrect?

  1. A

    Suspended particulate matter can lead to respiratory problems like bronchitis and asthma.

  2. B

    Acid rain is mainly constituted by SO2and NO2.

  3. C

    CNG is called a cleaner fuel as it burns completely.

  4. D

    Major greenhouse gases are CFCs. and hydrocarbons only.

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