Iwill crown brainless to first answer!

As water is cooled from 4 to 0, its density

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

Scientist research shows that our global climate is changing. ocean temperatures and acidity are increasing, and the global sea level is rising. which of the following best predicts an outcome of this global climate change in a marine ecosystem? a. more species will be able to survive due to the less extreme temperatures in the ocean b. the increased acidity will make more difficult for harmful bacteria to survive c. tectonic plate activity will increase and produce warmer ocean temperatures d. many marine species will not be able to adjust quickly enough to survive