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What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.
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Which of the following is an example of a chronic disease? question 7 options: flu tuberculosis salmonella diabetes
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Can we find solution to a problem without conducting systematic research?...
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