Nitrogen example sentences

Oxides of nitrogen and sulphur which are acidic in nature can be blown by wind along with solid particles in the atmosphere and finally settle down either on the ground as dry deposition or in water, fog and snow as wet deposition.How is the quality of air affected and how does this change in quality affect us and other life forms? The fossil fuels like coal and petroleum contain small amounts of nitrogen and sulphur.However, other than a few forms of bacteria, life-forms are not able to convert the comparatively inert nitrogen molecule into forms like nitrates and nitrites which can be taken up and used to make the required molecules.In a series of experiments, Haber started with known amounts of dinitrogen and dihydrogen maintained at high temperature and pressure and at regular intervals determined the amount of ammonia present.These are oxides of sulphur, nitrogen and carbon, hydrogen sulphide, hydrocarbons, ozone and other oxidants.We keep hearing of the increasing levels of oxides of nitrogen and sulphur in the news.Usually catalytic converters are used in the automobiles, which prevent the release of nitrogen oxide and hydrocarbons to the atmosphere.Being leguminous crops, all these crops except arhar help in restoring soil fertility by fixing nitrogen from the air.Since coal and petroleum have been formed from bio–mass, in addition to carbon, these contain hydrogen, nitrogen and sulphur.Nephridia help to remove nitrogenous wastes and maintain a fluid and ionic balance.However, plants cannot absorb nitrogen in this form.Consequently there are six groups of p–block elements in the periodic table numbering from 13 to 1 Boron, carbon, nitrogen, oxygen, fluorine and helium head the groups.After the harvest, the soil becomes deficient in nitrogen.Soil has certain bacteria that convert gaseous nitrogen into a usable form and release it into the soil.Their combustion results in the formation of oxides of sulphur and nitrogen which are major pollutants in the environment.