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In the water cycle , when does water undergo a chemical change
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Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.
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Describe the trends in electron configuration in the periodic table by selecting the terms from the drop down menus
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Accounts for almost 70 percent of water use....
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