Dangling high above the ground, this rock climber relies on muscular strength to pull her weight higher and higher. However, muscles alone will not ensure her safety. Explain why the muscular system cannot act alone to perform a skill such as rock climbing. Describe what other systems must be a part of this rock climber's game plan.
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Dangling high above the ground, this rock climber relies on muscular strength to pull her weight hig...
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