Biology

What are the thin bones that protect your lungs and heart?

More Questions from Biology
What is a name for a substance that your body needs for energy and growth?
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Which of the following is not one of the southern yellow pine trees?
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Which of the amino acids is actually an imino acid?
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What vertebrates are cold-blooded and have dry scaly skin?
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What is endocrinology?
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What are organisms that make their own food in a food chain called?
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What is the stage in humans where the body matures physically?
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What is the name of the acid formed when hemoglobin bonds with hydrogen ions?
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