Natural Resources

This chapter deals with the availability, sources, uses, states, and the need for conservation of water. It also explains how water changes from one form to another and elaborates on the importance of water cycle.

This chapter deals with the composition of air and explains the importance of each component of air. It mentions the importance of maintaining the balance of oxygen and carbon dioxide in air. The problem of air pollution is also discussed here.

This chapter deals with the concept of waste management. It further discusses the segregation of biodegradable and non-biodegradable waste. The role of municipality and public in managing waste is also elaborated here.