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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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Twitchin Twitchin
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6 years ago
All of the following increased agricultural productivity except
 
  A) the replacement of the sickle with the scythe.
  B) specialization and regular schedules.
  C) a significant improvement in the climate.
  D) increased use of chemical fertilizer.
  E) the steam driven threshing machine.
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AseizeAseize
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6 years ago
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Twitchin Author
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6 years ago
You make an excellent tutor!
emilyas19
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Yesterday
Smart ... Thanks!
SlimyPencil
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2 hours ago
this is exactly what I needed
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