<span>Carbon dioxide is
considered a pollutant because simply, it can cause global warming. On the
other hand, CO2 increases the acidity of some bodies of water because CO2 will
convert to carbonic acid it reacts with water.</span>
John Dalton was the first to propose a theory to describe matter. As per Dalton's model, all matter is composed of atoms which resemble tiny 'ball-like' structures that are indivisible.
