Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Deforestation contributes to global warming.
Reason (R): Loss of vegetation due to deforestation is one of the factors responsible for land degradation.
In the light of the above statements, choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Both (A) and (R) are true but (R) is not the correct explanation of (A).
Assertion (A): Deforestation contributes to global warming. — True. Deforestation is one of the factors that may be contributing to global warming.
Reason (R): Loss of vegetation due to deforestation is one of the factors responsible for land degradation. — True. Loss of vegetation due to deforestation is the first factor listed for land degradation.
Why R does not explain A?
Both statements are about deforestation, but R gives its effect on the land. Global warming is about the atmosphere. Deforestation adds to global warming because it increases the amount of carbon dioxide in the atmosphere, and carbon dioxide is a greenhouse gas.
NCERT (2026-27): “Box 7.1: Global Warming … Among factors that may be contributing to global warming are the burning of coal and petroleum products (sources of carbon dioxide, methane, nitrous oxide, ozone); deforestation, which increases the amount of carbon dioxide in the atmosphere; methane gas released in animal waste; and increased cattle production, which contributes to deforestation, methane production, and use of fossil fuels. …” “7.3 State of India’s Environment … Some of the factors responsible for land degradation are (i) loss of vegetation occuring due to deforestation (ii) unsustainable fuel wood and fodder extraction (iii) shifting cultivation …” |