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Approximately 70 percent of the earth is covered by water. Of this amount, approximately _____ percent of it is suitable for human use.
  • a)
    10
  • b)
    25
  • c)
    50
  • d)
    less than one
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Approximately 70 percent of the earth is covered by water. Of this amo...
Approximately 70 percent of the earth is covered by water. Of this amount, approximately ____ percent of it is suitable for human use.
To find the percentage of water suitable for human use, we need to consider the following:
Step 1: Calculate the total percentage of water on earth.
- Given that approximately 70 percent of the earth is covered by water.
Step 2: Determine the percentage of water suitable for human use.
- This percentage will be less than the total percentage of water on earth.

- Total percentage of water on earth: 70 percent
Now, let's consider the percentage of water suitable for human use. It is important to note that not all water is suitable for human consumption due to factors such as salinity, pollution, and inaccessibility. The suitable percentage of water is significantly lower than the total percentage of water on earth.
Therefore, the correct answer is D: less than one percent.
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