π€― Verified Fact Β· Nature
Wacky WorldAnimals & Nature
Oxygen enters through tiny holes called spiracles along their bodies and travels through tubes to their cells.
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Wacky WorldAnimals & Nature
Oxygen enters through tiny holes called spiracles along their bodies and travels through tubes to their cells.
Bones are stronger than steel of the same weight.
Weight for weight, bone is remarkably strong, especially under compression, because of its mix of collagen and mineral.