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In response to record growth in worldwide food demand

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Status: Greatness begins beyond your comfort zone
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In response to record growth in worldwide food demand [#permalink]

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New post 07 Nov 2017, 19:57
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

86% (01:12) correct 14% (01:00) wrong based on 50 sessions

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In response to record growth in worldwide food demand , farmers sharply increased fertilizer use after 1950. As a result, the productivity of farmland more than doubled by 1985. Since 1958 , farmers have sought to increase farmland producitivity even further . Nevertheless, worldwide fertilizer use has declined by 6 percent per acre between 1985 and the present.

Which one of the following, if true , most helps to resolve the apparent discrepancy in the information above?

A. Between 1975 and 1980, fertilizer prices temporarily increased because of labor disputes in several fertilizer exporting nations, and these disputes disrupted worldwide fertilizer production.

B. Several varieties of crop plants that have become popular recently, such as soybeans , are as responsive to fertilizer as are traditional grain crops.

C. Between 1950 and 1985 farmers were able to increase the yield of many varieties of crop plants.

D. Since 1985 the rate at which the world's population has increased has exceeded the rate at which new arable land has been created through irrigation and other methods.

E. After fertilizer has been added to soil for several years, adding fertilizer to the soil subsequent years does not significantly improve crop production.
[Reveal] Spoiler: OA

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In response to record growth in worldwide food demand [#permalink]

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New post 08 Nov 2017, 05:53
E Resolves the paradox.
It explains-
increase in farmland productivity and decrease in Fertilizer usage in recent years.

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In response to record growth in worldwide food demand   [#permalink] 08 Nov 2017, 05:53
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In response to record growth in worldwide food demand

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