题目内容
Household water accounts fro only _______ of humanity's water consumption.
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Agriculture currently covers ______ of earth's land area posing the biggest threat to our regional water supplies.
3% of potentially usable freshwater only less than ______ available for sustainly all life on earth.
___________ goes to the wide range of factories which make the products we buy each day.
This limited supply isn't distributed evenly around the globe.
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