Multiple choice general knowledge math & puzzles

Some animals have their bony structure on the outside...

  1. exoskeleton

  2. euthanasia

  3. expectorate

  4. Genesis

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A Correct answer
Explanation

An exoskeleton is a rigid external covering that provides support and protection to animals like insects, crustaceans, and arthropods. Unlike humans who have internal skeletons, these creatures have their bony structure on the outside of their body. 'Euthanasia' means mercy killing, 'expectorate' means to spit, and 'Genesis' refers to origin or creation.