solid powder is composed of molecules containing sober nitrogen and oxygen atoms all of the molecules are identical how was the substance classified

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

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