NEET BIOLOGY

Detailed explanation-1: -Located in the crater of an extinct volcano, Mexico City is about 2, 240 metres above sea level. The lower atmospheric oxygen levels at this altitude cause incomplete fuel combustion in engines and higher emissions of carbon monoxide and other compounds. Intense sunlight turns these into higher than normal smog levels.

Detailed explanation-2: -What is the main source of air pollution in Mexico City? Vehicles represent a major source of air pollution in Mexico City. The automotive fleet includes a large group of vehicles propelled by the combustion of hydrocarbons (fossil fuels) and include mopeds, cars and trucks.

Detailed explanation-3: -Perched 7, 300 feet above sea level in a valley wrapped round by mountains and volcanoes, Mexico City has long suffered from thick layers of smog produced by cars, factories, and wildfires. Among the worst hazards of that air pollution for its 21 million inhabitants is PM 2.5, inhalable fine particulate matter.

Detailed explanation-4: -There are various environmental issues in Mexico. The top three that affect Mexico is air pollution, lack of clean water, and deforestation.

Detailed explanation-5: -The provision of clean water to Mexico City, air pollution in the capital and other major cities, deforestation and erosion in rural Mexico are some of the most pressing problems.