Each year the U.S. spends over ________ billion dollars on imported oil.
A. 400
B. 100
C. 200
D. 800
Answer: A
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There is a hundred times the amount of gaseous oxygen in the atmosphere than there is dissolved
oxygen in the ocean. Indicate whether the statement is true or false.
The maximum annual temperature tends to occur ____
a. at the time of maximum receipt of solar radiation b. at the time of maximum sunspot activity c. a month or so before the receipt of maximum solar radiation d. a month or so after the receipt of maximum solar radiation e. six months or so after the receipt of maximum solar radiation
What is the paradox of human population and well-being?
What will be an ideal response?
What is the problem with using coal, oil and gas?
A. the air pollution they create can cause serious health problems B. they discharge pollutants into the atmosphere C. the air pollution they cause can reduce sunlight enough to affect agriculture growth D. all of these