CARBON DIOXIDE (CO 2 ) A colorless, odorless, incombustible gas formed during normal human breathing - but also emitted by the combustion activities used to produce electricity, as well as other natural and man-made processes.
(A colorless, odorless, incombustible gas; formed; T:during normal human breathing) (the combustion activities; used; to produce electricity, as well as other natural and man-made processes)
A colorless, odorless, incombustible gas the combustion activities
formed used
T:during normal human breathing
to produce electricity, as well as other natural and man-made processes