They could make a matrial that wolnt rust, and that will not wear down/ break
One thing you could do is if your going to a fast food place maybe you can take slow steps like for example if you buy a burger at Macdonalds then maybe you can not get a drink or fries with it. Hope that helped:))
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The right side of the heart collects oxygen-poor blood and pumps it into the lungs, meanwhile the left side of the heart collects the oxygen-rich bloods which is then transferred throughout the body.
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These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and function. ... The major glands of the endocrine system are the hypothalamus, pituitary, thyroid, parathyroids, adrenals, pineal body, and the reproductive organs (ovaries and testes).
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