Contamination

Pollution is the introduction of elements or other physical elements in a medium that causes the sea unsafe or not suitable for use. The medium can be an ecosystem, a physical medium or a living being. The pollutant can be a chemical, energy (such as sound, heat, light or radiation).

This are some of the most contaminated countries of the world.

China 28.21%

United States 15.99%

India 6.24%C

Russia 4.53%

Japan 3.67%

Germany 2.23%

South Korea 1.75%

Iran 1.72%

Canada 1.71%

Saudi Araba 1.56%

Bibliography:
https://es.wikipedia.org/wiki/Contaminaci%C3%B3n
http://www.excelsior.com.mx/global/2017/06/04/1167612