Semester 2 Review LS

5. abiotic carbon; made of carbon and oxygen atoms
8. the type of matter that makes up nonliving parts of an ecosystem
10. an organism that gets energy storage molecules by breaking down dead matter
12. the chemical reaction between oxygen and glucose that releases energy into cells
15. when a substance goes from gas to liquid
17. a group of atoms joined together in a particular way
19. all the living and nonliving things interacting in an area
21. when a substance goes from liquid to gas
22. ending substance made during a chemical reaction
24. when two or more species use the same resource, such as food
25. starting substance that is part of a chemical reaction

1. the process where producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose
2. when something becomes different over time
3. a molecule that organisms use to release the energy they need to survive (such as glucose)
4. a type of atom that makes up carbon dioxide and energy storage molecules
6. when something stays mostly the same over time
7. process when atoms rearrange to form new substances
9. the type of population that is eaten by organisms from another population
11. when a substance goes from liquid to solid
13. the type of matter that makes up the living and dead organisms in an ecosystem
14. where in a cell photosynthesis happens
16. the tiny pieces that all matter is made of
18. where in a cell cellular respiration happens
20. when a substance goes from solid to liquid
23. the type of population that eats organisms from another population