biosphere


bio·sphere

noun \ˈbī-ə-ˌsfir\

: the part of the Earth in which life can exist

Full Definition of BIOSPHERE

1
:  the part of the world in which life can exist
2
:  living organisms together with their environment
bio·spher·ic \ˌbī-ə-ˈsfir-ik, -ˈsfer-, -ˈsfe-rik\ adjective

First Known Use of BIOSPHERE

1899

Other Ecology Terms

Malthusian, anthropogenic, biomass, carbon footprint, crepuscular, niche, sere, symbiosis, taiga, tundra

bio·sphere

noun \ˈbī-ə-ˌsfi(ə)r\   (Medical Dictionary)

Medical Definition of BIOSPHERE

1
: the part of the world in which life can exist
2
: living beings together with their environment

biosphere

noun    (Concise Encyclopedia)

Relatively thin life-supporting stratum of the earth's surface, extending from a few miles into the atmosphere to the deep-sea vents of the oceans. The biosphere is a global ecosystem that can be broken down into regional or local ecosystems, or biomes. Organisms in the biosphere are classified into trophic levels (see food chain) and communities.

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