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Chapter 14 Natural Resources, Resources on Earth - Land, Sea, Air,
Lithosphere, Hydrosphere, Atmosphere, Biosphere - Biotic & Abiotic components,
AIR - the breath of life, CO2 fixation, Role of Atmosphere in climate control, Movement of air - winds, Land breeze, Sea Breeze, Rain, Formation of clouds, Air pollution, Acid rain,
WATER - a wonder liquid, Necessity of water, Water pollution, Main causes of water pollution,
SOIL - Formation of soil, Processes that makes soil - sun, water, wind, living organisms, Composition of soil, Soil pollution, Soil erosion, Causes of Soil Erosion, Effects of Soil erosion, Prevention of soil erosion,
BIOGEOCHEMICAL CYCLES - Water Cycle, Nitrogen cycle, Carbon cycle, Green house effect, Green house gases, Global warming, Effects of Global warming & green house effect, Oxygen cycle, Ozone layer, Ozone layer depletion, Causes of Ozone depletion, Effects of UV rays
PART 1: • CLASS 9 CBSE SCIENCE C...
PART 2: • CLASS 9 CBSE SCIENCE C...
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