what determines air quality? and how do you improve it?
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In general it is something called particulate matter often shortened to pm in atmospheric data, basically microscopic particles which can be inhaled deep into the lungs and cause damage https://youtu.be/PmKz3wCoycQ In addition there are gases such as ozone which while positive high up in the atmosphere are potentially lethal to animal life including humans at ground level, ozone can be created by the action of sunlight on dust particles converting oxygen into ozone. https://youtu.be/CYVzcZbhxxs other dangerous gases are carbon dioxide and especially carbon monoxide. Too much of any of these items creates poor air quality, reducing fumes from fires, factories and cars improves air quality. A strong wind can move local air pollution to another area and bring in cleaner air from over the oceans etc
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