Answer:1.The common causes of death are respiratory disease, stroke, cardiovascular disease and lung cancer.2. Diseases like cancer, can be developed on our bodies when exposed to polluted air3. their ability to diffuse rapidly and mix thoroughly with the air. 4. INDOORS:improve ventilation Vacuuming OUTDOORS:Drive cars lessuse less energyplants trees5. Because air pollution poses a major threat to health and climate.^_^