GEOGRAPHY: The Concept of Environment.

Environment is the total surrounding of any organism in a given area including the physical factors,climatic factors and other factors.
The sphere of an environment (the earth) is divided into four parts or spheres;
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1. Atmosphere: An atmosphere is a layer of gases surrounding a planet. It is the gaseous portion of the earth where gases like oxygen,nitrogen,carbon dioxide and other rare gases are found.
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2. Hydrosphere: This is the world of water which exists in form of rivers,lakes and oceans in an environment. Water is a very important element in the ecosystem in as much as life cannot exist without it.
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3. Biosphere: This is the biological active part of the earth where man,plants and animals are found.
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4. Lithosphere: This is the solid portion of the environment which contains rocks,soil minerals and other minerals.
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NB: The Environment here is also known as the Earth.
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