Environmental pollution is a phenomenon of the polluted natural environment, and the physical, chemical and biological properties of the environment are altered, causing harm to human health and other organisms. Environmental pollution is mainly caused by human activities. In addition, pollution is caused by a number of other natural activities that affect the environment. The burning of coal and wood and the emergence of a lot of smoke and dust are concentrated in one area making cities a major source of pollution. The industrial revolution has created more chemicals and wastes into the water that is being used to provide water. King Edward I of England announced a ban on burning coal in 1272 after the smoke of coal became a problem.