Across
- 1. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms
- 3. a set of interacting parts forming a complex whole
- 7. the part of a cell where cellular respiration happens
- 9. matter that makes up the nonliving parts of an ecosystem, such as air, water, and rocks
- 12. to link two or more things
- 13. a starting substance that is part of a chemical reaction
- 15. an ending substance that is made during a chemical reaction
- 16. something that is required for a process
- 19. matter that makes up the living and dead organisms in an ecosystem
- 20. a type of atom (a tiny piece) that makes up molecules such as carbon dioxide and energy storage molecules
- 22. an organism that gets energy storage molecules (such as glucose) by breaking down dead matter
- 24. living things, such as plants, animals, and bacteria
- 25. an organism that can make its own energy storage molecules (such as glucose)
- 26. the tiny pieces that all matter—all the stuff in the world—is made of
Down
- 2. an organism that needs to eat in order to get energy storage molecules (such as starch and fat)
- 4. a molecule made of carbon and oxygen atoms
- 5. a type of energy storage molecule
- 6. a group of atoms joined together in a particular way
- 8. something that results from a process
- 10. a molecule that organisms can use to release the energy needed to survive
- 11. a type of energy storage molecule made of many glucose molecules connected together
- 14. the chemical reaction between oxygen and glucose that releases energy into cells
- 15. the process by which plants and other producers use energy from sunlight to change carbon
- 17. all the living and nonliving things interacting in a particular area
- 18. a type of energy storage molecule
- 19. a closed ecosystem made by humans
- 21. the ability to make things move or change
- 23. the part of a cell where photosynthesis happens