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Changing your toilet can reduce water pollution because _______.
Which of the following is a way in which water resources are consumed?
Aquifers are _______.
The defining characteristic of potable water is that it _______.
Which of the following is least likely to have difficulties with economic access to potable water?
Groundwater overdraft occurs when _______.
Which of the following processes requires separate plumbing?
Which of the following is not a source of groundwater pollution?
Describe the most significant restriction on access to potable water around the world.
Around the world the most significant restriction on access to potable water is money. While access to raw water sources, clean or otherwise, is important, the purification process itself is expensive. Once water has been rendered potable, it is important that it be delivered without reintroducing contamination. The most convenient way to deliver potable water is through underground pipes, which requires expensive infrastructure.
Which of the following is true about Earth's supplies of freshwater?
Which of the following activities depend upon the availability of supplies of freshwater?
Explain the relationship between overpopulation and diminishing water supplies.
As human populations grow they consume more water, not just by drinking, but through all of the other human activities that require freshwater such as agriculture, bathing, cleaning, etc. Overpopulation, therefore, can lead to overconsumption as populations use more water than an area can support and replenish sustainably.
Explain why reducing surface runoff is the most general way to reduce water pollution.
Surface runoff includes a long list of nonpoint sources of pollution related to human activity. It occurs when water carries harmful substances into the environment. If this runoff can be prevented on a broadly-based scale, then it has the potential to significantly reduce water pollution.
Groundwater overdraft occurs when _______.
Which of the following is the most serious effect of water pollution for humans?
Aquifers are _______.
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