Forests are our lifeline because they are useful in many ways :
(i) Plants in the forest purify the air by absorbing carbon dioxide gas during photosynthesis and releasing oxygen. In this way, they maintain a balance between oxygen and carbon dioxide in the atmosphere.
(ii) Plants in the forest absorb water from the soil through their roots and release it into the air by the process of transpiration which increases the amount of water vapour in the air, helps in cloud formation and rainfall. Thus, forests play an important role in the water cycle operating on the Earth.
(iii) Forests provide us with various products such as wood, gum, medicinal herbs, fruits, latex, etc.
(iv) The roots of trees in the forest bind the soil particles together which helps in preventing soil erosion.
(v) Forests help in preventing floods and maintaining the water table by absorbing rainwater and allowing it to seep into the ground.