The consequences of over population cause many effects on the environment, which might cause extinction of many species and the most important is human species. In 1996, the World Conservation Union (IUCN), completed the first-ever extensive survey of the status of animal life on Earth. The 600 plus participating scientists concluded that of the species surveyed, 34 percent of fish, 25 percent of mammals and amphibians, 20 percent of reptiles, and 11 percent of birds are threatened with extinction. Another 5 to 14 percent of species in these groups are "nearing threatened status." "The leading cause of vertebrate declines is human destruction of old growth f

Moreover, human activities negatively affect the Earth's atmosphere through releases of pollution that causes smog, acid rain, and depletion of the ozone layer. This is directly related to human numbers and lifestyles, because it is largely a result of emissions from automobiles and industrial plants. World vehicle production is now approaching 40 million units annually, and the total world fleet is half a billion vehicles. As more people operate more automobiles and demand more energy produced by burning oil, coal and natural gas, emissions and therefore air pollution will increase further. Increasing levels of carbon emissions are also linked to what may be the most serious long-term threat to humanity - global warming and climate change. Because of the pollution, it affects people's health such as the blood of children in the urban area has lead content levels much higher than children's in rural area. And people who live in urban area have higher chance of having high blood pressure or higher death rate causing by cancer or other diseases than people in rural area have.

In China they have the one child policy, because the population in China is too big at this moment. It increasing day by day and if they do not have a suitable solution for this problem it can be a disaster. However, there are a lot of problems for this solution in China because people in Asia still keep their attitude about having boy or girl. Furthermore for some people they go oversea and have more than

Some common words found in the essay are:
Revolution Taurus, Union IUCN, , Worldwatch Institute, Southeast Asia, Madagascar Atlantic, square kilometer, square kilometer retained, kilometer retained, original habitat, carry fly home, people square kilometer, increasing day, increasing day day, primate species, vertebrate declines, wildlife habitat, rural people, day day, day earth,
Approximate Word count = 1002
Approximate Pages = 4 (250 words per page double spaced)