Natural Resources

The chapter explains importance, uses and conservation of water in detail. Here, it illustrates the different states of water and water cycle in detail. Further, it discusses the prevention of water pollution.

All organisms on the Earth need air to survive. This chapter explains the importance and composition of air in detail. It briefs the balance of oxygen and carbon dioxide in the air. Further, it discusses the causes and effects of air pollution.

The chapter explains the segregation of wastes and the management of biodegradable and non-biodegradable wastes in detail. Here, it includes the structure of landfills and the significance of practicing three R’s in managing non-biodegradable wastes.