HLSC 1F90 Lecture Notes - Lecture 23: Indoor Air Quality, Sulfur Dioxide, Smog
31 Mar 2016
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Document Summary
People are exposed to contaminants in water, air, food and soil in various ways: ingesting food, water, soil, objects, or liquids containing contaminants. Inhalation of a contaminated gas, vapour, or air borne particle. Radioactivity, exposure can occur through penetration of the skin by radioactivity in the air or ground. Expected to reach 9 billion by 2050. Majority of population growth occurs in developing world. Estimates for population growth are highly dependent upon predicted fertility rates. Currently 2. 75 children per woman, estimated to be 2. 05 children by 2040- Life expectancy is increasing, currently 60-80 years old depending on economic status. 20. 1% of the population is over the age of 60, with a projected increase pf. In less developed regions the percent of over the age 60 is 8. 1%, but ths is expected to increase to 20. 1% in 2050. Urban air pollution causes approximately 1. 3 million deaths worldwide per year. Cepa- came into effect on march 31, 2000.
