Natural Resources

This chapter deals with water and its contribution as natural resource. Non-renewable and renewable resources of water are highlighted here. Water on Earth is maintained by the water cycle. It further discusses about the groundwater which is depleting fast.

This chapter details about the forests and its various contribution towards mankind. The forests prevent flood, prevent soil erosion, provide food and shelter for wildlife, supply oxygen, etc. It also discusses about food chain and trophic levels.

This chapter deals with wastewater management and the importance of well-maintained drainage system. It also discusses on the sewage treatment and better housekeeping practices to lead a better way of living.