ESS
Grade-9
Easy
Question
Assertion [A]: Deforestation is one key factor adding to global warming.
Reason [R]: Moreover, CO2, methane and CFCs are also greenhouse gases.
- Both Assertion and reason are true, and Reason is the correct explanation of Assertion.
- Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
- Assertion is true, but Reason is false.
- Both Assertion and Reason are false
Hint:
When forests are cut down, much of that stored carbon is released into the atmosphere again as carbon dioxide (CO2)
The correct answer is: Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
- When forests are cut down, much of that stored carbon is released into the atmosphere again as carbon dioxide (CO2). This is how deforestation and forest degradation contribute to global warming.
- Major greenhouse gases include carbon dioxide, methane, nitrous oxide, and various synthetic chemicals. Carbon dioxide is widely reported as the most important anthropogenic greenhouse gas because it currently accounts for the greatest portion of the warming associated with human activities.
- Both Assertion and reason are true, and Reason is the correct explanation of Assertion.
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