The 4 spheres

The 4  spheres
Biospheres
hydrosphere
Lithospheres
atmospheres
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all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
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An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. The atmosphere of Earth is composed of nitrogen ...
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the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
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Lithosphere, Rigid, rocky outer layer of the Earth, consisting of the crust and the solid outermost layer of the upper mantle. ... It is broken into about a dozen separate, rigid blocks, or plates (see plate tectonics). ... The portions of lithosphere plates descending into the------------------------------------------------------------------------------------------------------------------------------------------------------------
70% of earth is made of hydrosphere!!!!!!!!!!!!
30% of the earth is made of Lithospheres!!!!!!!!!!!!
78% of the world is made of nitrogen
21% oxygen
The bio sparer just basically means light.