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Chemistry, 25.01.2021 09:20 bbbbbbbbbbbb62

Only 2.5% of Hydrosphere are freshwater, if only 31% of it are groundwater which we can drink right away, how many percent of our hydrosphere can be used as drinking water? a. 0.78%
b. 1.73%
c. 12.4%
d. 28.5%

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