DOODS IF YOU KNOW ABOUT BIOLOGY HERE ARE 2 QUESTIONS...YOU GET 10 POINTS IF YOU ANSWER BOTH AND!

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

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

Explain why scientists use the word dominant for certain traits.