Nature and It's Resources

In this chapter, we will study stars and other celestial bodies in the universe. Here, we will learn about constellations and identify some well-known ones. Further, the planets and artificial satellites and their uses are also explained in detail.

This chapter defines air and water pollution and analyses the causes and effects of air and water pollution. We will also recognise the importance of potable water. We will also learn some ways to purify water at home.