Noun
the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist
Source: WordNetA biosphere based on ammonia would likely exist at temperatures or air pressures that are extremely unusual in relation to life on Earth. Source: Internet
Accompanying the vast amount of archival footage is new interviews with the Biosphere 2 crew and those involved with their mission. Source: Internet
Biosphere main A planet's life forms inhabit ecosystems, whose total is sometimes said to form a "biosphere". Source: Internet
Because carbon uptake in the terrestrial biosphere is dependent on biotic factors, it follows a diurnal and seasonal cycle. Source: Internet
Biological effects Due to their sparse distribution in the earth's crust and low aqueous solubility, the lanthanides have a low availability in the biosphere, and are not known to naturally form part of any biological molecules. Source: Internet
Biologist E. O. Wilson estimated in 2002 that if current rates of human destruction of the biosphere continue, one-half of all plant and animal species of life on earth will be extinct in 100 years. citation E. O. Wilson repeats his estimation in 2012. Source: Internet