Arrange a tour to the sewage-treatment plant that serves your community. Compare it with what is described in this chapter
Is the water being purified or handled in a way that will prevent cultural eutrophication? Are sludges being converted to, and used as, fertilizer? What improvements, if any, are in order? How can you help promote such improvements?
Most communities will not have biological nutrient removal, nor will they have an alternative sludge treatment. Sewage treatment will stop at secondary treatment and, typically, the sludge will be land filled. Discussions concerning the economic and health costs and benefits of leaving the system as is or altering the system to include biological nutrient removal and/or treatment of the sludge prior to use as fertilizer would be the place to begin promoting improvement.
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What is the name of the program whereby coal-burning power plants are allowed to buy and sell pollution credits if they do not exceed their assigned quota for a particular pollutant?
A. cap and trade B. bait and switch C. cap and exchange D. overstock clearance
During a cold winter, snow can provide a useful shelter material for animals and humans because it is a poor ________
Fill in the blank(s) with correct word
A flammable vapor concentration that is too rich to ignite is _____.
a. Below the lower explosive limit b. Above the upper explosive limit c. Between the lower explosive limit and the upper explosive limit d. Below the upper explosive limit
As waves enter the coastal zone, wavelengths shorten and wave heights increase
Indicate whether the statement is true or false