Which salt concentration served as the experimental control in lab?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Are the earth's ocean floor and continents the same age geologically? why or why not?

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