ESS
Grade-9
Easy
Question
Match the following.
| 1. CH4, CO2, CFC |
a. Hydrocarbon |
| 2. Methane |
b. Major component of climate change |
| 3. Nitrogen |
c. Ozone depletion |
| 4. Carbon fluorocarbon |
d. Most available gas |
- 1 – b, 2 – a, 3 – d, 4 – c
- 1 – a, 2 – b, 3 – c, 4 – d
- 1 – d, 2 – c, 3 – b, 4 – a
- 1 – c, 2 – a, 3 – d, 4 - b
Hint:
Greenhouse gases, methane gas, and chlorofluorocarbons play a major role in climate change by causing global warming and ozone depletion
The correct answer is: 1 – b, 2 – a, 3 – d, 4 – c
Carbon dioxide is a major greenhouse gas that is responsible for global warming. Methane is a hydrocarbon responsible for global warming too. Chlorofluorocarbons are causing ozone depletion by breaking down in the atmosphere into free chlorine that reacts with ozone and depletes it in the stratosphere
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