Air Pollution and MCERTS

摘要

Every day, the average person inhales aboutrn11,000 litres of air. Every time we breathe, wernrisk inhaling dangerous chemicals that havernfound their way into the air.rnAir pollution includes all unwantedrncontaminants found in the atmosphere.rnThese substances can be either in the form ofrngases or particles.rnAir pollution can be found both outdoors andrnindoors. Pollutants can be trapped insidernbuildings, causing indoor air pollution thatrncan last for a long time.