We should worry about the forest for the following reasons :
(i) A decrease in forest area would lead to an increase in carbon dioxide in the air. This will lead to an increase in the earth's temperature.
(ii) Soil erosion would occur if there are no forests.
(iii) Floods would be more frequent in absence of forests.
(iv) Forests provide shelter and food to animals. When forests are adversely affected, the habitats of wild animals are also adversely affected.
(v) Due to the reduction of forest land will turn barren which is called desertification.
(vi) Forests provide us with a large number of useful products including wood, fruits, and medicines. These products would not be available in the absence of trees and plants.