Which isotope of lead has a double magic number? (1) pb-206 (2) pb-207 (3) pb-208 (4) pb-209

Can someone me with questions 15 to 17 plz.

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ

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