1. Introduction Pollution is an unwanted change in the environment caused by the introduction of harmful materials or the production of harmful conditions (Botkin & Keller, 2014). Urban air pollution is basically the collection of pollutants created by cities (http://en.cyberdodo.com/files/cyberdodo-and-urban-pollution/1.html). Air quality in cities is the result of a complex interaction between natural and anthropogenic environmental conditions. Air pollution in cities is a serious environmental
something that relates food, nutrients, and human health. Finally, I was pondering to read an article in 2010 in daily star heading ‘Toxic poultry feed poses health risk'. I came to know from the report that poultry and fish feed possessed by tannery waste which is a serious health risk for consumers because contaminants directly entering the food chain. After reading that article, I have a lot of question into my mind. What happen if heavy metals entered into our body? What is their