Mexico City Environmental Inequalities 0.0 / 5 ? GeographyCase studiesA2/A-levelAQA Created by: ellapendletonCreated on: 21-03-16 09:58 What is the main factor for Mexico city being the most polluted city in the world? There are 3.5 million vehicles (30% more than 20 years ago) 1 of 17 Why is population a contributing factor for the pollution of the city? Sheer size; 20 million live in the city 2 of 17 What physical factor contributes to the pollution of the city? Located in a crater of extinc volcanoes causing low oxygen levels leading to incomplete combustion in engines 3 of 17 What pollutants are released from incomplete complete combustion? Carbon monoxide, hydrocarbons and volatile organic compounds 4 of 17 What effect does intense sunlight have on the pollutants? Increases smog levels 5 of 17 How many tonnes of pollution are emitted each year? 4 million 6 of 17 What are the four main sources of pollution in Mexico City? Internal combustion engines, natural sources, services and industry 7 of 17 What percentage of pollution is from internal combustion engines? 75% 8 of 17 What pollutant gas is associated with industrial activity in the city? Sulphur dioxide 9 of 17 What pollutant gases is associated with motor vehicles emissions? Carbon Monoxide, nitrogen dioxide and hydrocarbons 10 of 17 What causes the smog over Mexico City? Cold sinking air trap pollutants 11 of 17 How is the pollutant, ozone, produced? When nitrogen oxides and volatile organic compounds react in sunlight 12 of 17 Where do particulates come from in Mexico City? Construction of roads and buildings, burning refuse and vehicles 13 of 17 What effects do pollutants have on humans? Irritates eyes, cause or aggravate respiratory problems, cardiovascular ailments and premature death 14 of 17 How many inhabitants have no running water? 2 million 15 of 17 How many inhabitants have no sewage systems and what does this cause? 3 million. People are forced to leave waste in vacant areas and becomes a part of the city's water 16 of 17 How many tonnes of garbage are produced a day and how much of this is processed? 14,000 tonnes are created but only 8000 tonnes are processed 17 of 17
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