Deforestation:

• It refers to the cutting down of trees on a large scale and clearing of forest cover.

• It is highly undesirable.

• It leads to an increase in CO₂ content and ultimately increased global warming.

• It promotes soil erosion.

• It converts a fertile land into a barren land.

• It reduces rainfall and causes a flood.

Afforestation:

• It refers to the planting of trees on a large scale and increasing the forest cover.

• It helps to maintain favourable climatic conditions.

• It is highly desirable.

• It prevents soil erosion.

• It increases rainfall.

• It converts a wasteland into fertile land.

• It supports wildlife and helps in its conservation.