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My Answered Questions
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Why is it important to have enough REM sleep
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What happens to plants growing in potassium deficient soil and why do the plants need potassium
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why is the most common isotope Carbon – 12, 12/6C
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Is cancer caused by the nucleus of cells multipling too quickly?
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in an atom, why does the charge have to be negative
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why do leaves at the tops of trees lose chlorophll first in Autumn