the increase in the number of world population is increasingly increasing year by year. this increase causes many problems such as, the narrowness of agricultural land in the countryside, the number of unemployed, and the denser population of the city.
consequently, humans can damage the surrounding environment. in fact the environment where human life on earth is different in the mountainous and hilly terrain, the land is less fertile, the climate is not comfortable.
otherwise there are also areas of the earth's surface topografia sloping, comfortable climate, adequate rainfall, and fertile soil.
population concentrations tend to occur in areas with flat topography, fertile, close to water sources and cool climates.
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