United States _ Tim net war purifier wpurifi- households -s
Social point of view: saving and clean water is the only way to solve the shortage of water: Tim net water purification Views: 383 Published: 2018-5-18 17:16:01 Some scientists have predicted: "Water scarcity will soon become a profound social crisis "this is because the () a total amount of water is sufficient earth, freshwater resources are ample;. B due to the greenhouse effect of carbon dioxide, water constantly reduced evaporation; C fresh water resources are not sufficient, and the uneven distribution; D water continues to be contaminated, freshwater resources are becoming less abundant. The answer is C, D why not choose it? This is now a very controversial topic, but both sides have supported the view of the data, but one thing is the same, that is, "water shortages will soon become a profound social crisis." Option C to the effect that only water resources accounting for the total body water on Earth is about 2.53%, and 70% are difficult to use solid ice, and the uneven distribution of fresh water, more water scarcity may refer to various water shortage; D is selected to the effect that environmental damage , contaminated water, drinking water safety is threatened.
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