How does gene expression lead to differentiation

How are carbon dioxide emissions affecting the earths natural cycle of temperature change? plz apex

Loss of protected health information collected for research should be directly reported to:

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