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3. a claim supported by evidence
5. a molecule made of carbon and oxygen atoms
7. a group of atoms joined together in a particular way
8. a proposed answer to a question about the natural world
12. the chemical reaction between oxygen and glucose that releases energy into cells
17. a type of energy storage molecule made of many glucose molecules connected together
18. a process in which atoms rearrange to form new substances
19. the body system that takes in food and breaks it down

1. the body system that takes in oxygen and releases carbon dioxide
2. the body system that transports molecules to and from all cells of the body
4. a category of large molecules that perform important functions inside living things
6. molecules that are the building blocks of proteins
9. the body’s use of molecules for energy and growth
10. information about the natural world that is used to support or go against (refute) a claim
11. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen,
13. the ability to make things move or change
14. the process of making clear how your evidence supports your claim
15. oxygen atoms
16. a molecule that organisms get from the air or water around them and use to release energy
20. a set of interacting parts forming a complex whole