Global problem that have become more actual in recent years is overpopulation. Now in the world are more than 7 milliards people and it is too much. In some countries like India, China cities are so overcrowded that people are living in three or more levels. I think it is not normal. Overpopulation is caused by many factors. Human mortality is decreasing, the birth rate increases, each year medicine becomes more developed and many people prefer to move to countries like United Kingdom, US, Australia etc. First of all, overpopulation causes depletion of nature resources, which soon can run out. People cut down forests, cause pollution, and use fossil fuel. But the most important thing is the limited amount of water. Other things which are caused by overpopulation are spread of different diseases, conflicts and wars about water and nature resources, unemployment and high cost of living. …
