| http://www.w3.org/ns/prov#value | - According to Wikipedia, ???Only 2.5% of the Earth's water is freshwater, and 98.8% of that water is in ice and groundwater.??? We, as human beings, have developed a highly effective olfactory system, which can not only smell such dangers as fire and toxic gas, but also such things as the potability of water, necessary to keep us healthy and free of illness.
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