ESS
Grade-9
Easy
Question
Select the incorrect statement.
- Greenhouse gases are essential for our existence.
- Earth’s atmosphere would be freezing up without greenhouse gases.
- Ozone is the very abundant greenhouse gas.
- HCFCs are responsible for the depletion of ozone layer.
Hint:
Ozone is the protection required to protect us from the harmful UV rays of the sun
The correct answer is: Ozone is the very abundant greenhouse gas.
Carbon dioxide is a major greenhouse gas. greenhouse gases cause global warming whereas ozone in the stratosphere acts as a protective layer
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Match the following
| Greenhouse gas |
Contribution to greenhouse effect (%) |
| 1. Carbon dioxide |
a. 6% |
| 2. Nitrous oxide |
b. 14% |
| 3. Methane |
c. 20% |
| 4. Carbon fluorocarbon |
d. 60% |
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| Greenhouse gas |
Contribution to greenhouse effect (%) |
| 1. Carbon dioxide |
a. 6% |
| 2. Nitrous oxide |
b. 14% |
| 3. Methane |
c. 20% |
| 4. Carbon fluorocarbon |
d. 60% |
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__________is mainly responsible for greenhouse effect.
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Reason: Increase in CO2 level leads to decrease in Earth’s temperature.
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