Is a major product made from gymnosperms

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

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

What materials must dams have to produce electricity, and what must occur?