Which of the following statements regarding coal is false?
a. Coal combustion results in acid rain and mercury pollution.
b. Coal provides energy at a higher cost than oil shale.
c. Coal mining results in acid mine drainage.
d. Coal deposits are known in every geological period since the Devonian.
e. Electrical utilities consume about 90% of U.S. coal production.
B
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What is biochemical oxygen demand?
A. amount of oxygen required to decay a certain amount of organic matter B. method by which settled organic matter is returned to aeration tanks C. a necessary material that is in short supply D. None of these are correct.
The warm zone near the top of the stratosphere is the result of heating from ________
A) atmospheric pollution B) the rise of air C) the output of volcanoes D) thermal infrared emissions from clouds E) the natural breakdown of ozone
In the western North Pacific, which of the following terms refers to a storm of tropical origin whose high winds and water cause a great deal of destruction to islands in that part of the world?
A. hurricane B. typhoon C. willy willy D. cyclone
The Latin American region has held onto its indigenous religions, which remain the dominant faith today
Indicate whether the statement is true or false