Biology
What are the thin bones that protect your lungs and heart?
More Questions from Biology
How many chromosomes does a typical human body cell have?
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What cells carry messages from all parts of the body to the brain?
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What's the scientific term for an animal that eats the sort of foods humans do?
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In which fluid-filled cavity do organs develop in organisms such as earthworms?
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Fish take in oxygen through their gills; what do insects take in oxygen through?
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