Human overpopulation

Human overpopulation (or population overshoot) occurs when the ecological footprint of a human population in a specific geographical location exceeds the carrying capacity of the place occupied by that group. Overpopulation can further be viewed, in a long term perspective, as existing if a population cannot be maintained given the rapid depletion of non-renewable resources or given the degradation of the capacity of the environment to give support to the population. Changes in lifestyle could reverse overpopulated status without a large population reduction.

Some examples can be:

1 - China: 1,415 million

2 - India: 1,354 million

3 - United States: 326 million

4 - Indonesia: 266 million

5 - Brazil: 210 million

6 - Pakistan: 200 million

7 - Nigeria: 195 million

8 - Bangladesh: 166 million

9 - Russia: 143 million

10 - Mexico: 130 million

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