Acidic oxide Some non-metal oxides, such as nitrous oxide (NO) and carbon monoxide (CO), do not display any acid/base characteristics. Acidic oxides can also react with basic oxides to produce salts of oxoanions: Acidic oxides are environmentally relevant. Sulfur and nitrogen oxides are considered air pollutants as they react with atmospheric water vapour to produce acid rain. Although it is difficult to classify these oxides as acids, the property is manifest in reactions with bases. For example, carbon dioxide reacts with alkali. For this reason, alkali is kept in stoppered vessels to inhibit reaction with atmospheric carbon dioxide. In geochemistry complex silicates
Environmental impact of paper 2.5 microns in diameter or less which can penetrate the respiratory system and have a serious effect on health. The pulp and paper industry in the U.S. and Canada is responsible for roughly 10% of the industrial releases of PM. However, the majority of PM in the air comes from non-industrial sources such as residential wood combustion, construction, and dust from unpaved roads and when these sources are taken into account, the pulp and paper industry in North America produced only about 0.5% of the total in 2014. Nitrogen oxides (NO) sulfur oxides (SO) and carbon dioxide (CO) are all