PT157.S2.Q3

PrepTest 157 - Section 2 - Question 3

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Although there are immediate short-term gains in crop yield from a single application of certain hydrocarbon-based pesticides to fields on which they have not been previously used, studies have shown clearly that long-term use gradually depresses crop yield from this initially elevated level. ██ ██████ ████████ ████ ███ ██ █████ ██████████ ████████

Summary

Using certain hydrocarbon-based pesticides on a field not previously treated with pesticides results in immediate short-term increases in crop yield. However, long-term use results in a decrease in crop yield over time.

Strongly Supported Conclusions

Use of these pesticides results in benefits that decrease over time.

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3.

Which one of the following █████ ████ █████████ ████████ ███ ████████ ██████

a

is uneconomic

b

damages the environment

c

will eventually make ████ ████████ ████████████

d

is probably not █████████ ██ ██████████ ████ ██████████████ ████████████

e

gives financial returns ████ ████████ ████ ████

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