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human environment reveals the activities, creations and, Word Origin, interactions among human beings., Environment: French, word Environer/, Environner meaning, NATURAL ENVIRONMENT, Land, water, air, plants and animals comprise the natural, environmentYou are familiar with the meaning of, Tithosphere, hydrosphere, atmosphere and biosphere), from your previous class. Let us learn some more facts, about these domains., Lithosphere is the solid crust or the hard top layer of, the earth. It is made up of rocks and minerals and covered, by a thin låyer of soil. It is an irregular surface with, various landforms such as mountains, plateaus, plains,, valleys, etc. Landforms are found over the continents, and also on the ocean floors., Lithosphere is the domain that provides us forests,, grasslands for grazing, land for agriculture and human, settlements! It is also a source of mineral wealth., "neighbourhood"., Let's do, Look at your, surroundings. Make a, list of uses that the, land in your, neighbourhood is, being put to., Atmosphere, Biosphere, op $,, Where does the water, you use in your home, and school come, from? Make a list of, different uses of, Hydrosphere, water in our daily life., Have you seen anyone, wasting water? How?, Fig. 1.2: Domains of the Environment, The domain of water is referred to as hydrosphere. It, comprises various sources of water and different types of, water bodies like rivers, lakes, seas, oceans, etc. It is, essential for all living organisms., The atmosphere is the thin layer of air that, surrounds the earth.-(The gravitationņal force of the, earth holds the atmosphere around it. It protects us, op ss, Observe the sky while, coming to school., Make a note whether, the day is cloudy., rainy, sunny, foggy etc., ENVIRONMENT 3