Please select the word from the list that best fits the definition Is half the size of Earh, has two moons, and has an atmosphere of mostly carbon dioxide

Mercury
Earth
Mars
Venus

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