Question

Assertion :Deforestation is one main factor contributing to global warming. Reason: Besides $C{O}_2$, two other gases, methane and CFCs, are also included under green house gases.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true and R is not the correct explanation of A
• C. A is true but R is false
• D. Both A and R are false

Answer 1

The correct option is B Both A and R are true and R is not the correct explanation of A

Deforestation is one main factor contributing to global warming. Trees help in reduction of CO${}_2$, a greenhouse gas, by utilizing it for photosynthesis.

Besides CO${}_2$, two other gases, methane and CFCs are also included under greenhouse gases. However, they don't have a direct relationship with deforestation.

So, the correct answer is option B.