The oldest oceanic crust is slightly less than ____ years old
a. 300,000
b. 4.6 billion
c. 70,000
d. 180 million
e. 3.96 billion
d
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Bioremediation of hazardous waste uses ____ to detoxify hazardous waste.
A. charcoal filters B. cement kilns C. plants D. bacteria and enzymes E. combustion
Differences in the census dates of different countries makes cross-national comparisons difficult
Indicate whether this statement is true or false.
Which of the following reactions will consume the most oxygen?
A) complete combustion of one mole of 2,3-dimethylhexane B) complete combustion of one mole of 2,3,4-trimethylpentane C) complete combustion of one mole of octane D) None, they all consume the same amount of oxygen.
Which climate control can lead to both cooling and warming?
A. less atmospheric aerosols B. more carbon dioxide C. more clouds D. less equatorward currents E. more ice surfaces