At present, rivers, streams and lakes filled with sewage. The air around us, it is harmless to health. A rapidly advancing human It does not have time to figure out a way to protect the survival of the Muslim nation. If this is still the man to meet the pollution around the self-built with natural
light pollution. A condition caused by using too light of a city or community, which is excessive light. To disturb the ecosystem, such as the lives of nocturnal animals. The visibility of celebrities constructing low down.
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