The result of human activity , while the world population is increasing rapidly. But the land to accommodate population expansion. Not only would cause congestion of population per unit area. Also causing a shortage of energy and natural resource degradation. From deforestation Spontaneous symmetry breaking as a source of oxygen and also helps to absorb greenhouse gases. Due to the demand for energy soared by a number of the world's population. With a growing economy and industry. The demand for energy in all areas increased dramatically. That means the increase of greenhouse gases in the atmosphere. Global warming even more impact on the climate. And the likelihood that natural disasters will occur in various parts of the world.
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