Indoor air pollution is a very serious problem. According to The U.S. EPA, "air within homes and other buildings can be more seriously polluted than the outdoor air in even the largest and most industrialized cities." Common sources of indoor air pollution include: Radon, Environmental Tobacco Smoke (ETS), Biological Contaminants, Stoves, Fireplaces, Household Products, Formaldehyde, Pesticides, A
ไม่มีความคิดเห็น:
แสดงความคิดเห็น