| http://www.w3.org/ns/prov#value | - For example sulphur dioxide and nitrogen oxide are both dangerous when they combine .with other substances to create problems such as smog and acid rain .Gases are not the only air pollutants that we should be concerned about Tiny bits of dust, ****l, soot and other materials also find their way into the atmosphere from manufacturing plants, construction sites, wood burning stoves and cars.
|
