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U

Ultraviolet Radiation (UV)

Electromagnetic radiation in the wavelength range of 200 to 400 nanometres. (Also known as ultraviolet light).

Upcycling

is the process of converting waste materials or useless products into new materials or products of better quality or for better environmental value.

Urban runoff

Storm water from city streets and adjacent domestic or commercial properties that may carry pollutants of various kinds into the sewer systems and from there to rivers, lakes or oceans.



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