3. all of the energy within an ecosystem originates from the

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

How does food concentration affect yeast activity

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture