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2 September, 07:57

A muscle contracts more strongly when lifting a 20-pound weight than when lifting a 5-pound weight. This is because more fibers are contracting, not because individual fibers contract harder.

a. true

b. false

a. true

+1
Answers (1)
  1. 2 September, 10:11
    0
    The answer to your question is factual
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