Completar Frases Air Pollution VocabularyVersión en línea Identify key terms about indoor air pollution. por Мария Ковалевич 1 Excessive use of causes air pollution . Using sticky traps instead of can help reduce pollution . that live in carpets and mattresses are known to cause allergies . If you want to be sure to keep the air in your house fresh , you need to clean or replace your - regularly . Some doctors believe that having a cat in the home is the cause of for many people .
