What is the orbital notation for iron

What protects the lining of the stomach from acidic gastric juices?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

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