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12th Standard English Medium Biology (Botany) Subject Environmental Issues Creative 2 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 10

    2 Marks

    5 x 2 = 10
  1. Name any four greenhouse gases.

  2. Methane is one of a potent green house gas. Point out a few sources from where methane is generated.

  3. What is Dobson unit?

  4. What is ozone layer? Why it is essential?

  5. Where did Montreal Protocol was held? State its objectives.

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