Assertion : Deforestation increases carbon dioxide concentration in the atmosphere.
Reason : Deforestation may lead to desertification.

Options

A. (a) Both, Assertion and Reason, are true and Reason is the correct explanation of Assertion
B. (b) Both, Assertion and Reason, are true but Reason is not the correct explanation of Assertion
C. (c) If Assertion is true but Reason is false
D. (d) If Assertion is false but Reason is true

Answer

B

Explanation

Deforestation is the conversion of forested areas to non-forested ones. One of the major effects of deforestation is enhanced carbon dioxide concentration in the atmosphere because trees that could hold a lot of carbon in their biomass are lost with deforestion. Deforestation also causes loss of biodiversity due to habitat destruction, disturbs hydrological cycle, causes soil erosion and may lead to desertification.