Select the correct answer. why might two elements possess similar chemical properties? a. they belong to the same group of the periodic table. b. they have the same physical state. c. they have similar physical properties. d. they belong to the same period of the periodic table.

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time