Key+Question+3+(AIR)

Why is it like this? The air contamination is cause by people when they throw wastes and burn and throwing garbage , using  cars and industrial factories that produce smoke, all this issues can cause different types of sickness and can produce more problems to the air and oxigen.  Also could produce esmog. The cows also produce in Cali air contamination because their gases are methane and produce 24 times more contamination at atmosphere, that become more hotter than the smoke of factories, cars etc....(CO2) and produce 100 and 200 methane gases at the day. In the north of Cali is still the most contaminate place in here because Cali receive all the particles of the industrial factories in Yumbo. The Dagma said that the public transport is the principal cause of the Air Contamination. In Cali they have 300 000 vehicles.  Some factories in Yumbo are working on to reduce the environmental impacts that created a system for capturing smoke. That stops downloading the smells in the area.

Resources: Larrouse enciclopedia de preguntas y respuestas pg. 36 Enciclopedia del estudiante pg. 94, 95 http://www.elpais.com.co/paisonline/notas/Febrero142008/cali05.html (Elisa and Angela found out) http://www.slideshare.net/guestada6d64/la-contaminacin-en-cali