Waste from broken down nutrients in cells is expelled through the digestive system respiratory system excretory system nervous system

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

Wich level of organization includes all the other levels or organizations

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer