Multiple choice

What is the difference between a lobster's exoskeleton and a human skeleton?

  1. exoskeletons are on the outside; skeletons are on the inside

  2. exoskeletons are harder than a human skeleton

  3. exoskeletons are on the inside; skeletons are on the outside

  4. exoskeletons provide support; human skeletons do not
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A Correct answer
Explanation

Lobsters have an exoskeleton (on the outside), while humans have an endoskeleton (on the inside).

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