Some plants have amazing properties that can aid in water filtration. For example,
Norma Alcantar at the University of South Florida in Tampa has discovered that when mucilage (a type of gum used to store water) from the prickly pear cactus is mixed with water that contains high levels of sediment or the bacterium Bacillus cereus, both the bacteria and the sediment sink to the bottom. The mucilage, in other words, acts as a cheap and effective natural filter, which could be employed by millions of people in developing nations to produce clean water.
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