TIMMER HELP PLLEASE Which of the following is not a benefit to using scientific models? a. Scientific models help scientists gain a better understanding of concepts and events. b. Scientific models aid in communication about concepts and events. c. Scientific models are never subject to change. d. Scientific models can help answer scientific questions. Please select the best answer from the choices provided A B C D

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Diagram of the evolution of land plants?

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