Five Methods to Stop contamination - 0 views
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eargon on 01 May 12Pollution is very recent in relation to the development of this land, or the arrival of types of human beings. It's only about 5000 years ago when people began smelting copper and toxic gases and vapors and smoke began to seep into the pristine environment. Metal iron around 2000 BC, in addition to the color of the blue sky.