Natural Resources
This is the video of the fourteenth chapter (Chapter 14) of Class 9 Science – Natural Resources

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The topics that are covered in this video are listed here: We first learn What are these resource on the earth. Then we take our first topic of The breath of life: Air where we understand The role of the atmosphere in climate control, The movement of air: Winds, Rain and Air pollution. Then our next topic will be covered, that is of Water: a wonder liquid. Here we shall also see Water pollution. The next topic to be covered is of Mineral riches in the soil. Then we move on to the topic of Biogeochemical cycles. This is an important topic and here we shall see the cycles like The water cycle, The nitrogen cycle and The carbon cycle. After learning about the carbon cycle we shall see The greenhouse effect under it. Then we will see the fourth cycle, that is, The oxygen cycle. After these four cycles we shall move on to the last topic of an important layer in the Earth’s atmosphere, the Ozone Layer.

Apart from these topics you can also enrich yourselves with some extra related topics like: Renewable and non-renewable natural resources, Biotic and abiotic component, living and non-living things, lithosphere, hydrosphere, atmosphere, biosphere, composition of air, layers of atmosphere, Importance of atmosphere in climate control, what causes wind?, uneven heating of air, Phenomena responsible for rain, water cycle, evaporation, sublimation, condensation, precipitation, infiltration, ground water, water bodies, rainfall pattern in India, Air pollution, pollutants, different types of pollutants, primary air pollutant, secondary air pollutant, combustion of fossil fuels, harmful effects of air pollution, heart disease, cancer, allergies, fresh water, ground water, water in rivers, lakes and ponds, importance of water, water pollution, primary water pollutant, secondary water pollutant, causes of water pollution, harmful effects of water pollution, Soil as a resource, formation of soil, Physical, chemical and biological process involved in formation of soil, Sun, water, wind and microorganism responsible for formation of soil, different layers of soil, type of soil, topsoil, importance of topsoil, nitrogen in atmosphere, nitrogen fixation by leguminous plants, Ammonification, nitrification, denitrification, nitrites, ammonia, nitrates, carbon dioxide, carbon dioxide in atmosphere, inorganic carbonates, organic compounds, Photosynthesis, greenhouse effect, greenhouse gases, harmful of effect of greenhouse gases, respiration, importance of ozone layer, depletion of ozone, causes of ozone hole and harmful effects of ozone depletion, etc.

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