okay so these are individual questions but they are both true or false and thank you so much if you answer :)​

Differentiation of cells changes the nucleic information. true false

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

Explain how scientists use geologic time to determine the age of landforms.