Which toxic gas is an important component in London-type smog?
A) ozone (O3 )
B) sulfur dioxide (SO2 )
C) radon (Rn)
D) carbon monoxide (CO)
B
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The Protestant Reformation took root in various parts of Europe during the ____ century
a. 14th b. 15th c. 16th d. 17th e. 18th
The most important limiting factor in rocky intertidal communities is ________
A) food B) light C) nutrients D) predation E) space
________ first pointed out that fossil species succeed one another through successive layers of sediment in a predictable order.
A. D. McGeary B. N. Copernicus C. I. Newton D. N. Steno E. W.S. Smith
What is the best solution to groundwater depletion?
A. Grow more water intensive crops, waste less water, and lower the price of water. B. Limit number of wells, grow more water-intensive crops, and build rain gardens. C. Subsidize water conservation, waste less water, and limit the number of wells. D. Lower the price of water, build rain gardens, use permeable paving materials. E. Waste less water, lower the price of water, and subsidize water conservation.