Comprehension Quiz: Water Scarcity

Question: The ecosystems that surround cities can reduce the quality and abundance of water available to humans.

Answer: The preservation and restoration of ecosystems that naturally collect, filter, store, and release water, such as wetlands and forests, is a key strategy in the fight against water scarcity.

Question: Wealthy countries do not suffer from water scarcity.

Answer: Many countries and major cities worldwide, both wealthy and poor, face increasing water scarcity in the 21st century.

Question: Water scarcity can be caused by the economic undervaluing of water as a finite resource.

Answer: When people believe water has little economic value and is of infinite supply, they tend to waste it, and they also leave water resources unregulated (or under-regulated). The result can be water scarcity.

Question: Physical water scarcity can be seasonal.

Answer: Seasonal water scarcity frequently affects people who live in arid or semiarid environments.

Question: The majority of freshwater resources are devoted to industrial uses.

Answer: About 70 percent of all freshwater resources are devoted to agriculture.

Question: Global warming is expected to increase water scarcity.

Answer: Changes in weather patterns due to global warming are expected to exacerbate water scarcity in many places around the world.

Question: Which of these is not a proposed solution to water scarcity?

Answer: Though groundwater resources are commonly overutilized, a ban on their exploitation is unfeasible. Wetland restoration, improved irrigation practices, and wastewater utilization, however, are practical solutions to water scarcity that are currently in use.

Question: Aquifers recharge readily and are difficult to deplete.

Answer: Aquifers can be easy to deplete, for often they recharge only slowly, if they recharge at all. It is estimated that one-third of the world’s largest aquifer systems are in distress because of overexploitation.

Question: Drought is always the root cause of water scarcity.

Answer: Drought is not always the root cause of water scarcity. Water scarcity can occur even when water resources are plentiful.

Question: Which of these is an example of economic water scarcity?

Answer: Economic water scarcity is due to a lack of water infrastructure in general or to poor management of water resources where infrastructure is in place.