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From the year 1800, human population has increased a lot. Because humans learned to fight against diseases and other dangers in the world. Their life span became longer. Although technology grows faster, resources become less and less. Some people waste resources and some don't have enough of them. Humans destroy nature for their needs. The animals decreased because of food and water shortage. If humans keep making babies, eventually they will finish all the resources The Earth has. ~ Zuqiang
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In China the government says every couple is allowed to have just one child, because people do not have enough food and water. They have a similar situation in India as well. In Mexico people haven't got enough water, because it is very hot. Mexican people have to pay for water and they need to be careful so they don't waste it. In Africa couples have got many children, because many of them die quite young. ~ Marina
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