The land, water, and all the living organism within natural maintain their own balance.If the balance is disturbed at once point. The stress shows at other in an unexpected way and a chain reaction follows. Many fertile lands of ancient civilization and buried under mounds of silt because the land was ill-managed due to overpopulation. The stress on nature is greater and will continue to grow.Technological changes can after the earth irreversibly, the atmosphere consists of Nitrogen 78 %, Oxygen 21%, carbon dioxide 3% and other gases and water vapor. Some of the organic matter turn into fossil, fuels, coal, and petroleum and release carbon dioxide by burning with oxygen.
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