The human skeleton is stronger than concrete of the same weight.
Why it is true
Human bones are incredibly light but possess a compressive strength that surpasses that of concrete, thanks to their internal structure of collagen and minerals.
Source: Skeletal System
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.