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Human Skeleton System Jigsaw Puzzle
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We've all seen skeletons in our school's biology lab. As much as they are scary, we all can learn how human body structure is made and the physics behind it. It is also responsible for the amount of weight that we can carry. The important bone in our skeleton system is the backbone. If you've seen one, let's see if you can put the right pieces together and make it a whole by solving this sliding puzzle.
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