13. Contrast endothermic and exothermic reactions (Unit 1).
14. _ are the basic unit of matter. (Unit 1)
15. _ are pure substances made up of only one type of atom (i. e. hydrogen H) while _ are pure substances that are made up of two or more types of atoms in a specific ratio (i. e. carbon dioxide CO2). (Unit 1)
16. When a _ change occurs, the resulting substances have new/different properties. (Unit 1)
17. Contrast erosion and weathering. (Unit 2)
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Biology, 22.06.2019 06:00, Ryan02717
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
Answers: 1
13. Contrast endothermic and exothermic reactions (Unit 1).
14. _ are the basic unit of matter. (...
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