Read the following New York Times Article, WATER; Pushing the Limits Of an Irreplaceable Resource, by William K. Stevens.
Answer the following questions:
1.According to the article, how were the earth and its geographic features formed?
2.Why is the total amount of available, renewable freshwater difficult to measure?
3.How have technology and urbanization affected water usage?
4.What natural disasters are related to water, and how can these disasters affect us?
5.How has human use of water biologically and geographically changed the earth?
6.Why would countries “run out of water in the future if they insist on producing their own food”? How does the presence of water relate to the wealth of a country?
7.What is irrigation, and why do some experts believe that “some dry areas will not be able to serve both the needs of farming and those of the ballooning cities” in the future?
8.How has water been a “source of conflict between regions, cultures, and countries,” and why?
9.In what ways have developed countries begun using water more efficiently, and why were some of these changes made?
Next, read the National Geographic News article, World has enoughWater for All, Experts Say; Only if People Pay, by Aliette Frank.
Discuss the following statement: 
Human factors are responsible for economic water scarcity.