The main sources of air pollution are the agriculture and traffic industries, as well as energy generation. Emissions of nitrous oxide (N2O) mainly stem from agriculture, emitted during the denitrification process. Also, the use of (artificial) fertilizers causes emissions of ammonia (NH3), nitrogen oxides (NOx) and methane CH4), a greenhouse gas. The agricultural sector is known for its extensive use of pesticides, which causes emissions of many toxic chemicals. During energy generation, chemicals such as methane are released into the air. “The combustion of coal and natural gas for electricity production causes the release of sulphur dioxide, nitrogen oxides and carbon dioxide into the air.” Traffic is responsible for one-third of the greenhouse gas emissions – carbon dioxide, carbon monoxide, nitrogen oxides, VOC and small dust particles.
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