What region is the least threatened by desertification?
A) Africa
B) Asia
C) Australia
D) Europe
E) North America
D
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Poor countries do not have the opportunity to sell food products to rich countries because
A) the quality of their produce does not meet the standards set by rich countries. B) the rich countries have erected tariff walls to close their markets of food imports from poor countries. C) they hardly have the capability to produce sufficient food for themselves. D) the types of food grown in poor countries are alien to the tastes found in rich countries. E) poor countries would not know how to use the foreign exchange they received in such an enterprise.
Why is it better to water your lawn in the early morning instead of the afternoon?
If the sun's energy could be measured in units like money, which of the following organisms would be the most expensive to maintain?
A) A mushroom B) A fox C) A squirrel D) A sunflower
This globe, from the opening two-page spread of the Climate chapter, shows average annual temperature (warmest is red, coolest is purple). What is the main factor causing Europe to be colder than Africa?
A) Trade winds
B) Westerlies
C) Amount of insolation
D) Ocean currents