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5 November, 12:22

Why were hand pumps ineffective?

a. They were tiring to use

B they only worked near lakes or Rivers

C. they could not be relocated

d. they broke easily

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Answers (1)
  1. 5 November, 12:38
    0
    A

    Explanation:

    The answer is a because a human doesn't have unlimited stamina. Even the strongest man will get tired doing something too long.
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