Define the following terms a).hydrosphere b).biosphere

Biosphere -- the global ecosystem composed of biotic (living) factors and the abiotic (non-living) factors from which they derive energy and nutrients.  AKA the ecosphere, is the worldwide sum of all ecosystems (all life on earth)

Hydrosphere -- the combined mass/volume of water located either on, under, and above the surface of a planet, minor planet, or natural satellite. This water is still counted regardless of its state (ie. liquid...gas...solid) and takes form as what we see as Rivers, Lakes etc

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