Given below are two statements: one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A): Global warming is caused by an increase in the environmental temperature.
Reason (R): It is the result of an increase in the level of CO₂, deforestation and an increase in methane production.
In the light of the above statements, choose the most appropriate answer from the options given below:
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- B(A) is correct, but (R) is not correct
- C(A) is not correct, but (R) is correct
- DNone of the above
Show answer and explanation
Correct answer: (c) (A) is not correct, but (R) is correct
Explanation
(A) is not correct and (R) is correct.
- (A): global warming is the rise in the Earth's average temperature. Saying that it is caused by a rise in temperature puts the effect in place of the cause.
- (R): the real causes are the greenhouse gases that trap heat: the rise in carbon dioxide from burning fossil fuels, deforestation (fewer trees to absorb CO₂) and more methane from paddy fields, cattle and landfills.