Which type of mutation causes this translation of error that leads to cystic fibrosis?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

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