Natural Resources

This chapter explains the importance of water and discusses different ways to conserve water. We will learn about the three states of water and how it can be changed from one form to another by either heating or cooling. It also briefs on the water cycle.

This chapter explores the properties, components and uses of air. We will learn the process of respiration in plants, animals and human beings. A brief note on the oxygen cycle and ozone layer is given here.

This chapter explores the types of wastes and explains the 3Rs of waste management. It explains about the landfill and the ways to reduce waste. We will also learn about the advantages of recycling wastes.