Explain the role of white blood cells in preventing disease

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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thats not a question