biosphere

  

Definition

Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers (3.7 miles) above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere. Also called ecosphere.

Use biosphere in a sentence

  • The widespread implementation of energy sources which are not based upon petrolium will certainly have a long-range effect on the entire biosphere.

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  • A skydiver last year claimed that he jumped from outer space to earth when really he just jumped from the biosphere to earth which allowed his fall by gravity.

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  • All the living organisms of the biosphere interact constantly, within a closed system that evolved to be self-healing, strong and enduring.

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