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Questions and Answers
What was the condition of groundwater until recently?
What was the condition of groundwater until recently?
- Clean (correct)
- Dirty
- Untested
- Expensive
What was not necessary to do to groundwater until recently?
What was not necessary to do to groundwater until recently?
- Measure its quality
- Store it in tanks
- Pump it out of the ground
- Purify it before drinking (correct)
Why did people not need to purify groundwater until recently?
Why did people not need to purify groundwater until recently?
- Because it was dirty
- Because it was scarce
- Because it was clean (correct)
- Because it was expensive
What appears to have changed about groundwater recently?
What appears to have changed about groundwater recently?
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What is implied about the current state of groundwater?
What is implied about the current state of groundwater?
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