NEET BIOLOGY

Detailed explanation-1: -Deforestation is the cutting down of trees. Desertification is when the soil becomes a desert type of soil. Trees provide nutrients to the soil and when they are cut down, the soil no longer receives the nutrients it needs to live and it will become dry like a desert.

Detailed explanation-2: -High severity wildland fires provide the ecosystem stress that can push normal soil erosion across a threshold of irreversibility that leads to desertification and loss of ecosystem productivity (Davenport et al. 1998).

Detailed explanation-3: -The exploitation of firewood had harmful consequences on the environment and biodiversity especially climate change (30%), reduction of soil fertility (28%), disappearance of fauna and flora (29%), soil degradation and desertification (27.5%).

Detailed explanation-4: -Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing.