What percentage of the world’s current population growth is taking place in poor countries?
a) Only about 10%, because infant mortality rates are so high in these countries
b) About 25% due mostly to immigration patterns from poor countries to rich
countries
c) About half, nearly 50%
d) Over 90%
d) Over 90%
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Caprocks are ____
a. rock layers that form the top of mesas and buttes b. hardened crusts that form the surface of playas c. hat-shaped rocks on top of thin, rock pedestals d. wind-deposited landforms
One principle in the Kyoto Protocol of the international environmental laws is the
A. common but undifferentiated responsibility of the states. B. common but differentiated responsibility of the states. C. uncommon but differentiated responsibility of the states. D. None of the choices are correct.
Explain why the middle parts of clouds have so few ice crystals despite temperatures there that are well below freezing.
What will be an ideal response?
What city is located at the mouth of the Rio Grande?
A) Laredo B) Corpus Christi C) Brownsville D) Houston