What complicates soil conservation practices?
A. The need for food and fiber.
B. There are no practical ways to conserve soil.
C. Erosion always occurs before the practices can take effect.
D. Most farmers do not see the need for soil conservation.
Answer: A
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Fill in the blank(s) with the appropriate word(s).
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An environmental engineer wants to evaluate three different methods for disposing of a non-hazardous chemical waste: land application, fluidized-bed incineration, and private disposal contract. Use the estimates below to help him determine which has the least cost at i = 10% per year, on the basis of an (a) annual worth, and (b) present worth evaluation.
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Answer the following statement true (T) or false (F)