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<h3>Moving water also picks up and carries particles of soil and rock. The ability to erode is affected by the velocity, or speed, of the water. ... As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.</h3>
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Muscles produce keratin so that hair can grow stronger. Sweat glands break down the food that is consumed. Muscles contract rapidly to produce heat on a cold day.
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Skin acts a defensive and protective layer. It protects the internal body from pathogens, which are disease causing bacteria. The skin can fend off bacteria, particles, foreign bodies, etc.
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A chemical element is a type of atom with the same number of protons in their <u>atomic</u> nuclei.
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For an example, the atomic number of Chlorine is 17, and there is 17 protons in Chlorine.
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