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27 Apr 2021, 08:30
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% of total volume of water
represented by surface water: 1.75 % of total volume of water
represented by groundwater: 0.75
represented by surface water: 1.75 % of total volume of water
represented by groundwater: 0.75
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
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Question Stats:
97% (01:49) correct
3%
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wrong
based on 864
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Approximately 2.5 percent of the total volume of water on Earth is in the form of freshwater. Of this freshwater, approximately 70 percent is in the form of surface water in rivers, lakes, ice, and permanent snow. The remaining 30 percent is stored underground in the form of groundwater.
Select for % of total volume of water represented by surface water the approximate percent of Earth's total water volume represented by freshwater in the form of surface water, and select for % of total volume of water represented by groundwater the approximate percentage of Earth's total water volume represented by groundwater, according to the information provided. Make only two selections, one in each column.
Select for % of total volume of water represented by surface water the approximate percent of Earth's total water volume represented by freshwater in the form of surface water, and select for % of total volume of water represented by groundwater the approximate percentage of Earth's total water volume represented by groundwater, according to the information provided. Make only two selections, one in each column.
|
% of total volume of water represented by surface water |
% of total volume of water represented by groundwater |
|
| 0.75 | ||
| 1.75 | ||
| 2.5 | ||
| 3 | ||
| 5.5 |
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Official Answer
% of total volume of water
represented by surface water: 1.75 % of total volume of water
represented by groundwater: 0.75
represented by surface water: 1.75 % of total volume of water
represented by groundwater: 0.75
27 Apr 2021, 11:07
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Let the total volume of water on Earth be 1000lt.
Freshwater = 2.5% of 1000lt = 25 lt.
Surface water = 70% of 25lt = 17.5lt.
Therefore, % of total volume of water represented by surface water = 1.75
Ground Water = 25lt - 17.5lt = 7.5lt
Therefore, % of total volume of water represented by ground water = 0.75
Freshwater = 2.5% of 1000lt = 25 lt.
Surface water = 70% of 25lt = 17.5lt.
Therefore, % of total volume of water represented by surface water = 1.75
Ground Water = 25lt - 17.5lt = 7.5lt
Therefore, % of total volume of water represented by ground water = 0.75
10 Dec 2022, 22:12
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Let us simplify the question:
Either we can find what to do in the titles of the columns:
% of total volume of water represented by surface water [SW]
% of total volume of water represented by groundwater [GW]
So,
SW = \(\frac{25}{1000}\)*\(\frac{7}{10}\)*100 = \(\frac{175}{100}\)= 1.75
GW = \(\frac{25}{1000}\)*\(\frac{3}{10}\)*100 = \(\frac{75}{100}\)= 0.75
Quote:
Either we can find what to do in the titles of the columns:
% of total volume of water represented by surface water [SW]
% of total volume of water represented by groundwater [GW]
So,
SW = \(\frac{25}{1000}\)*\(\frac{7}{10}\)*100 = \(\frac{175}{100}\)= 1.75
GW = \(\frac{25}{1000}\)*\(\frac{3}{10}\)*100 = \(\frac{75}{100}\)= 0.75
