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CHAPTER-1
GEOGRAPHY
OUR ENVIRONMENT
SUMMARY
•Our environment is made up of the surroundings we live in.
•Our environment is made up of both biotic and abiotic components.
•Atmosphere is made up of troposphere, stratosphere, mesosphere and
exosphere.
•Hydrosphere is composed of all the water bodies on Earth.
•Lithosphere comprises of the outer solid crust of the Earth.
•Biosphere is the narrow contact zone where air, water and land are
found together and living organisms exist.
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