Do you think that issues of water supply and demand are unique to desert
cities and towns? Explain how the problems of obtaining adequate water
for desert inhabitants might apply to your city or town. What will be an ideal response?
Answers will vary depending on the students’ prior knowledge of this subject. Issues
of water supply and demand are not unique to desert cities and towns. For example,
very large cities in any location may struggle to provide high-quality drinking water to
their citizens. Coastal cities may have salt water infi ltrating their aquifers. Cities and
towns relying on surface water must confront fl uctuations in precipitation as well as
contamination of their water sources.
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The attractive forces between the hydrogen atoms in one water molecule and the oxygen atoms in another molecule are known as:
A) dark forces. B) hydrogen bonds. C) water bonds. D) liquid bonds.
In primary economic activities or first stage (pre-industrial) of the demographic transition model, most people are working in
a. agriculture, fishing, and forestry. b. manufacturing and industry. c. government, retail, and services. d. all of the above are correct. e. most people do not work in primary economic activities.
The compound 6-aminohexanoic acid is used to make the condensation polymer nylon-6. Polymerization is not always successful, however, because of a competing side reaction. What is this side reaction?
A. One end of the 6-aminohexanoic acid reacts with the other, and this reaction is favored in concentrated solutions. B. One 6-aminohexanoic acid reacts with another, and this reaction is favored in dilute solutions. C. One end of the 6-aminohexanoic acid reacts with the other, and this reaction is favored in dilute solutions. D. One 6-aminohexanoic acid reacts with another, and this reaction is favored in concentrated solutions.
Surf is made up of waves of translation. Indicate whether the statement is true or false