Managers of wendy's fast-food restaurants keep track of prices at competitors such as mcdonald's, burger king, and arby's, knowing that a decrease in the prices at these other fast-food restaurants will:

a. increase the income effect for wendy's products.
b. increase demand for wendy's products.
c. decrease the income effect for wendy's products.
d. increase the complementary effect for wendy's products.
e. decrease demand for wendy's products.

Which one of the following statements is true? ddt does not prevent disease from passing from agricultural animals to humans. cost was a major factor in the united states government's decision to ban ddt. many african governments concluded that the potential long-term health effects of ddt were not as serious as the immediate problem of insect control. ddt cannot accumulate in the fat of animals. the ddt ban in the united states has made it very difficult to control agricultural insect pests.