Oxygen is the ______ component of the atmosphere in terms of volume.
A - third
B - fourth
C - fifth
D - second
E - main
D - second
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Which of the following gives the name for hail that is deposited in a long, narrow band?
A. squall line B. hail line C. ice line D. hailstreak
Which of the following is NOT true of plantation agriculture?
A) For many generations, plantations were important in the U.S. South, where the principal crop was cotton, followed by tobacco and sugarcane. B) Plantation farming in the U.S. began to decline after the abolition of slavery C) Today, plantation farms are mostly in developing countries D) Crops they grow help feed about seventy percent of the population in the countries where they are E) They are often owned and managed by Europeans and North Americans
What is MTBE?
A) a pollutant that dissolves in ground water B) a natural component of gasoline C) a pollutant that sinks to the bottom of an aquifer D) a carcinogen that rises to the top of the water table
By the year 2050, the world needs to cut its greenhouse gas emissions by ____% in order to prevent the planet from heating up by more than 3.6o F (2o C).
A. 5-15 B. 15-25 C. 25-50 D. 50-85 E. 100