Beschreibung
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm to humans or other living organisms, or cause damage to the atmosphere. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the planet's ecosystems. In 2008, indoor air pollution and urban air pollution were listed as two of the world's worst pollution problems.
