Available Answers

1. 1.

   See the picture. List at least five actions by us that has led to the damaging of the environment.

   

2. 2.

   Choose the correct option. (MCQs)

   1. Which among the following is not a greenhouse gas?
      1. Methane
      2. Oxygen
      3. Carbon dioxide
      4. Nitrogen
   2. Which is not the effect of changing climate?
      1. Global warming
      2. Diseases like asthma
      3. Extinction of animals
      4. Road accidents
   3. Which cooling device do you think is environment friendly?
      1. AC
      2. Refrigerator
      3. Earthen pot
      4. Water cooler
   4. Why should you say 'no' to plastic bags?
      1. They are not hygienic.
      2. They are expensive.
      3. They are mostly transparent.
      4. They pollute the environment.
3. 3.

   Fill in the blanks.

   1. Biogas is ______________ energy.
   2. Carbon dioxide and methane are ______________ gases as they trap heat.
   3. ______________ layer prevents the harmful rays of the Sun from reaching the earth.
4. 4.

   Match the following:

   1. Greenhouse gas	a. Coal
   2. Ozone layer	b. Solar energy
   3. Fossil fuel	c. Protective layer in atmosphere
   4. Renewable energy source	d. Carbon dioxide

    

5. 5.

   List two ways in which your life is directly dependent on fossil fuels.

6. 6.

   How does the greenhouse effect occur in the Earth's atmosphere?