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Answer:
Americans do not use the same measuring system.
Canada, like Europe, uses the metric system. Americans, on the other hand, use the older Imperial System of Measurement. While many Americans think this system is the best way, the US is actually one of the only countries in the world that uses it.
Long-term exposure to current ambient PM concentrations may lead to a marked reduction in life expectancy. The reduction in life expectancy is primarily due to increasedcardio-pulmonary and lung cancer mortality.
Increases are likely in lower respiratory symptoms and reduced lung function in children, and chronic obstructive pulmonary disease and reduced lung function in adults. Hope this helped=)
Most active volcanoes in South America are found in Chile.
1. Copahue - This volcano lies in Both Chile and Argentina . Its elevation is 9,728 ft. it usually shows intense fumarolic activity. The eruptions are not explosive.
2. Paranicaota - located in both Chile and Bolivia.
3. Gaullatir - located in Chile. It is still treated as active Its most recent eruption was in 1985.
4. Lascar - located in Chile. It is an active one. The most recent eruption was in 1993. It is considered the most active volcano in the central Andes
