Define the terms : a) Atmosphere b) Biosphere
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★The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere
★The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients. Earth's environmental spheres
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The biosphere is one of the four layer that surrounding the earth along with the lithosphere, atmosphere , hydrosphere and it is the sum of all the ecosystem.
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