Trees, Trees, Trees

Plants began to appear on Earth nearly six Billion years ago. As part of the photosynthesis process, plants produce energy and organic compounds whereby by

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Graywater

Waste water produced in residences can be divided into two types. Black water, which has fecal secretions from toilets or nutrients from the kitchen, and

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The Ötzi

The Ötzi is a body of a man preserved in ice, found in the northern Italy Alps (by the Austrian border). It is estimated that

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