Matter and Energy in Ecosystems

3. an organism that can make its own energy storage molecules (such as glucose)
6. a group of atoms joined together in a particular way
7. a type of energy storage molecule
10. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms
12. an organism that needs to eat in order to get energy storage molecules (such as starch and fat)
16. to link two or more things
18. the process by which plants and other producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose (an energy storage molecule)
19. the part of a cell where cellular respiration happens
21. a set of interacting parts forming a complex whole
22. a closed ecosystem made by humans
24. a type of atom (a tiny piece) that makes up molecules such as carbon dioxide and energy storage molecules
26. the nonliving parts of an ecosystem, such as air, water, and rocks
27. a molecule made of carbon and oxygen atoms
28. all the living and nonliving things interacting in a particular area

1. something that is required for a process
2. an organism that gets energy storage molecules (such as glucose) by breaking down dead matter
4. something that results from a process
5. the chemical reaction between oxygen and glucose that releases energy into cells
8. the tiny pieces that all matter—all the stuff in the world—is made of
9. a starting substance that is part of a chemical reaction
11. a molecule that organisms can use to release the energy needed to survive
13. the ability to make things move or change
14. a type of energy storage molecule
15. living things, such as plants, animals, and bacteria
17. the part of a cell where photosynthesis happens
20. an ending substance that is made during a chemical reaction
23. a type of energy storage molecule made of many glucose molecules connected together
25. the living and dead organisms in an ecosystem