Answer:
definition: the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
The geosphere is all of the rock, land and minerals on Earth, and you can remember this because 'geo' means 'ground. ' The hydrosphere is all of the water on Earth, which makes sense since 'hydro' means 'water. ' 'Bio' means 'life,' so all of the living organisms on Earth make up the biosphere.
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