Carbon dioxide is a byproduct of metabolism in the cells, but while it is a waste product in man and animals, carbon dioxide is necessary for plant respiration.
(it; is; a waste product in man and animals) (carbon dioxide; is; necessary) Context(carbon dioxide is,List([110, 127))):(Carbon dioxide; is; a byproduct of metabolism in the cells)
carbon dioxide is,List([110, 127))
it carbon dioxide Carbon dioxide
is is is
a waste product in man and animals
necessary
a byproduct of metabolism in the cells