Natural resources
You can see that some things in the picture are in water, some on land, and some in the sky, that is, in the air Thus, all things on the earth are associated with air, water and land. Air, water and land are called the earth's atmosphere, hydrosphere and lithosphere, respectively, Moreover, different living things occupy these three spheres of the earth. These living things and the parts of the lithosphere, hydrosphere and atmosphere which they occupy are together called the biosphere.These spheres have formed on the earth naturally. We have learnt all this in the previous standards. The atmosphere is the layer of air that surrounds the earth. The surface of the earth comprises water and land, that is, the hydrosphere and lithosphere. Of. these, the hydrosphere occupies a much larger part than the lithosphere Figure 1.2 shows the proportion of land and water on the earth's surface. We also look upon these natural components in solid, liquid and gaseous form as resources. In other words, we use them to fulfil our requirements. Let us now study all these three components in detail.
