In the past, people believe in the concept of Aristotelian science, said that the earth is the center of the universe. Later, with scientists have proposed new ideas. Earth is not the center of the universe and has a proven track record time. Later, with the scientists to learn about the universe. To know that the universe does not end. But the sun as the center of the solar system with the earth and the other planets revolved around the sun. As the earth revolves around the sun that caused the season. Scientists have assumed that when the 200 million years ago. The sticking up out of the water with only one continent. Later, with the apart, as currently, geologists believe that the plates are not adjacent to a single sheet. Since found cracks in deep from the earth"s surface. The crust is divided into sheet, called plates, although the surface 2 / 3 of earth is covered by water. But the fresh water is available a 1% so we must know how to manage water by ใช้น้ำอ did to เกอด maximum benefit.
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