Investigate




 * Knowledge**: Is the earth populated now?

**The human population of Earth reached 1 billion in 1804, 2 billion in 1927, 3 billion in 1959, 4 billion in 1974 and 5 billion in late 1986. Last year on October 12th 1999, the human population of Earth reached 6 billion. The population has doubled from 3 billion in 1959 to the 6,034,213,000 today. This doubling of population which occurred over the last 40 years will never come close to happening again and it is really scary. **


 * The growth of human population went up in 1987. That year 87.01 million more people were added to the Earth. Since 1987, the population has declined on average by 2.1 million less people added per year. In this year of 2000 the population will increase by 60.1 million people. If we maintain this 13 year average of 2.1 million less people added per year, we will rise in population reaching zero population growth in 2029 with 6.90 billion people. **

**The worldwide Fish Catch peaked in 1989 at 100 million metric tons, that is why lots of species of fish die. Since 1989, the seafood catch per person has fallen by 2 percent per year. Marine biologists at the Food and Agriculture Organization report that all 17 of the major oceanic fisheries are being fished at or beyond capacity. Nine are in a state of collapse. **
 * Sustainability Of Soil Energy: **
 * The rise in Grain Yield per hectare is slowing in all major grain-producing regions. Since 1984, grain output per person has fallen on average by .6 percent per year. In 1998, the per capita grain output further declined to 695 pounds, this is an 8 percent decline from the peak in 1984 when the per capita grain output was 755 pounds. The slower growth in world grain harvest is due to the lack of new land and slower growth in irrigation plus land contracts etc. and fertilizer use. Irrigated area per person, after expanding by 30 percent from 1950 until 1978, has declined by 4 percent. Since then the growth in the irrigated area has fallen behind that of population. With biotechnology neither providing nor promising any dramatic breakthrough in raising yields, there is little hope for restoring growth in food output. **
 * Sustainability Of Fisheries Energy: **


 * Fresh Water Limits: **
 * Since the amount of fresh water available for human consumption is constant, as population grows, the supply of fresh water per person declines. As a result, the amount of water available per person is expected to decline by 74 percent between 1950 and 2050. Nearly half a billion people around the world face water shortages today. By 2025, the number is expected to grow to 2.8 billion people. Of these, at least 1 billion people will be living in countries facing absolute water scarcity. Most overpopulated, fast-urbanizing countries of Asia, Latin America and Africa have to survive on largely polluted rivers and wells. Water is a major carrier of disease bearing germs. As many as 2.3 billion people in the world today suffer from diseases linked to water, such as dysentery, cholera and typhoid. Less than 1 percent of the Earth's water is fit and available for human consumption. **

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 * Comprehension**: Name some countries that are overpopulated and when did they start to become overpopulated?

2nd: India: 1,147,995,904
3rd: USA: 307,277,000 4th: Indonesia: 229,965,000 5th: Brazil: 191,241,714 6th: Pakistan: 180,808,000 7th: Bangladesh: 162,221,000 8th: Nigeria: 148,000,000 9th:Russia: 142,008,838 10:Japan: 127,590,000

There are many causes of overpopulation, the first reason is that the amount of people living in the continents of the world. These include Asia, Australia, Europe and many more continents.
====Another reason for the cause of overpopulation is that poverty. Poverty can cause overpopulation because of so much people living in poverty, everyday poverty floods the world, countries like: South Africa, China, Japan U.S.A and many more other countries.====

Some problems of overpopulation are, poverty, natural resource using and many more. These problems happen because of what we are doing to the whole world everyday.
====Poverty happens because of the poor people in the whole world, and how they're being treated by the world leaders. Natural resources are going down by the minute because of all the people who don 't care what they're doing to animals, plants, lands etc.==== ====I think these problems of overpopulation can be solved very quickly. Example: Poverty can be solved if we donate to them, and give them food, shelter, water and educational learning. Natural resources can be solved by not wasting precious water, like waterfalls, lakes, rivers and cleaning them. Also by not being greedy and hogging all the resources by yourself.====