The greenhouse effect in the atmosphere occurs because
A. Oceans absorb heat, and then release it slowly at night
B. Clouds reflect sunlight back into space
C. Stratospheric ozone absorbs UV radiation
D. CO2, water vapor, methanol, and other gases absorb infrared radiation
E. All of these are correct
Answer: D
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After the Manchu Dynasty of China was toppled in 1911-12, which of the following developments did NOT occur?
A) Local military leaders ("warlords") grabbed power for themselves. B) Xinjiang fell under Russian influence. C) Subsequent efforts to establish a unified Chinese Republic were successful within the following decade. D) Japan sought to expand its territory into China. E) Tibetans gained autonomy.
One of the major advantages of maquiladoras for American companies is what?
A) They are able to hire Mexican workers for much lower wages than they would have to pay American workers. B) These areas subscribe to no country's laws on pollution. C) These areas often have lax child-labor laws which allow workers as young as 12 to work in factories. D) Companies in these areas have to pay no corporate income tax.
Which of the following is the measure of the total amount of water vapour in the air?
A. average temperature B. dew point temperature C. maximum temperature D. minimum temperature
The circulation of the Icelandic Low pressure system which influences the North Atlantic Oscillation (NAO) is
A) clockwise and inward. B) clockwise and outward. C) counterclockwise and inward. D) counterclockwise and outward.