Pollution occurs if
A) there is more waste than a resource can tolerate.
B) there is less waste than environmental capacity.
C) recycling occurs.
D) waste is thrown away.
E) a regulation is passed.
Answer: A
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Which of the following would occur if all photosynthetic processes on Earth were to cease?
A) Carbon dioxide levels in the atmosphere would increase, and oxygen levels would decrease. B) Carbon dioxide and oxygen levels in the atmosphere would decrease. C) Carbon dioxide and oxygen levels in the atmosphere would increase. D) Carbon dioxide levels in the atmosphere would decrease, and oxygen levels would increase.
Compared with the rise of a stream hydrograph leading up to the peak discharge, the return to an average flow typically occurs much more quickly
a. True b. False Indicate whether the statement is true or false
A few centimeters' thickness of prime farmland soil may require ________ years to form
A) 10 B) 50 C) 100 D) 500
Compared to continental air masses with the same air temperature, maritime air masses:
A) have lower water vapor content. B) have about the same water vapor content. C) have higher water vapor content.