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Unit 1:
Ch. 1
Ch. 2
Ch. 3
Interlude A
Unit 2:
Ch. 4
Ch. 5
Ch. 6
Ch. 7
Ch. 8
Ch. 9
Interlude B
Unit 3:
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Ch. 13
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Ch. 15
Interlude C
Unit 4:
Ch. 16
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Ch. 19
Interlude D
Unit 5:
Ch. 20
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Ch. 23
Ch. 24
Ch. 25
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Ch. 28
Ch. 29
Ch. 30
Interlude E
Unit 6:
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Interlude F
Unit 7:
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Ch. 37
Ch. 38
Interlude G

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Farming That Improves the Environment

Researchers say partially burning some of the stalks, husks, and cobs left in corn fields produces products that can be used to improve soil fertility, boost in-soil storage of greenhouse gases, and reduce the amount of natural gas needed to produce fertilizer.

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Active Reading Questions

  1. fiogf49gjkf0d
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    Which of the following is the largest source of food for all of humankind?
    a) cropland
    b) rangeland
    c) oceanic fisheries
    d) all of the above
  2. fiogf49gjkf0d
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    Agriculture has traditionally focused on increasing yield (amount of crop produced per unit of land). Scientists, like the ones referenced in this article, have recently begun to look beyond yield to complete usage of all portions of a crop. What do the scientists in this article hope to accomplish?
    a) increasing corn yield in the Midwest
    b) decreasing vegetative plant material
    c) utilizing the whole corn crop
    d) none of the above
  3. fiogf49gjkf0d
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    How do the researchers think that their method of burning corn stover will aid in reducing global warming?
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