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The biosphere is derived from the Greek word bios means life, spaira means sphere is the layer of the planet Earth where life exists. The biosphere is one of the four layers that surround the Earth along with the lithosphere (rock), hydrosphere (water) and atmosphere (air) and it is the sum of the ecosystems.

The part of the earth's surface and atmosphere in which plants and animals can live in the environment.

Answer

The atmosphere, hydrosphere and lithosphere together are called biosphere. Every living being need biosphere to survive.

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