What are deserts, and where are they located on Earth? What will be an ideal response?
Deserts are arid lands that receive less than 25 cm of rain per year, have high evaporation rates, have
poorly developed soils, and have low amounts of vegetation. Deserts are found at around 30° north and
south of the equator where descending warm, dry air causes more evaporation than precipitation and
also where large mountain ranges block moisture and cause rain-shadow deserts.
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Substances made up of molecules that absorb large amounts of energy by way of vibrations and rotations have
A. low specific heat capacities. B. high specific heat capacities. C. none of the above
Contingent valuation ________
A) measures how much people would pay to restore a resource after it is damaged B) involves buying and selling "rights to pollute" C) measures how much time, effort, and money people spend to travel for natural recreation D) says we should treat others as we wish to be treated E) says all individuals deserve just and equal treatment
Why is the anode of a battery indicated with a negative (-) sign?
A) Electrons are attracted to the negative electrode. B) This electrode is the source of negatively charged electrons. C) Electrons move to this area to react with NH4Cl in the battery. D) It indicates the electrode where the chemicals are reduced.
In the United States, there have been numerous waves of internal voluntary migration. These include all of the following except
A) the westward expansion of the frontier. B) rural-to-urban migration of agricultural workers. C) the great northward migration of African-Americans. D) the Snowbelt to Sunbelt migration. E) the Trail of Tears.