1. Water Depletion and Desalination
Although the earth is about 71% water, only a fraction of it is potable fresh water. Around .37% of water is actual drinkable fresh water, of which .28% is actually accessible to us. When that is boiled down, only .00001036% of water on the earth is usable to humans. Therefore, with over 7 billion p...
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- Grade Level: High School