Biosphere
Definition: All the parts of Earth where life exists — on land, in water and in the air — together with the living things themselves.
More about biosphere
The biosphere is the largest level of ecological organisation: every ecosystem on the planet is part of it. It also gives this platform its name.
Origin of the term
The term was coined by the geologist Eduard Suess in 1875 and developed by Vladimir Vernadsky in the 1920s.