Which of the following is the correct trend in the historical development of power on...

AGRICULTURE
WAEC 2000

Which of the following is the correct trend in the historical development of power on the farm?

  • A. animal power-man power-mechanical power
  • B. man power-animal power-mechanical power
  • C. man power-mechanical power-animal power
  • D. animal power-mechanical power-man power

Correct Answer: B. man power-animal power-mechanical power



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