Mystery #1Tier 2-3body / skeleton
Why are bones so strong, yet so light?
Your thigh bone can support the weight of a car, but the whole skeleton it belongs to weighs only a few kilograms, light enough for your muscles to fling around when you run. How can bone be both that strong and that light?
Your guess
What's your hunch about how bone can be incredibly strong but still very light?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
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