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excretory waste (thing)
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(
thing
)
by
melodrame
Thu Nov 23 2000 at 5:16:49
Any material which accumulates to an excessive or unwanted level within an
organism's
cells
or
body
fluids
in the case of an
animal
. It may be produced as a direct result of the cell's
metabolism
.
e.g.,
CO
2
produced by
cellular respiration
.
Ammonia
produced by
respiratory
breakdown of
amino acids
.
Oxygen
produced as a
bi-product
in
photosynthesis
in
green plant
cells.
Respiratory
carbon dioxide
cellular respiration
Ammonia
Animalia
Oxygen
photosynthesis
metabolism
Michael Jackson
organism