What do saliva, tears, and nasal mucus have in common?

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 is the ecological role of food chains and food webs

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane