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Answer: Knowing how the body functions is important. If you understand how a body operates, then you'll know if everything is working the way it's supposed to. And knowing why it operates the way it does helps you to know how to develop a lifelong plan for good health.

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Answer: It's useful because you can find interesting things, for example, stomach acid can melt metal since it's so strong, we can learn a lot about it and we can live longer if we study it to help cure illnesses like cancer and HIV.

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