Matter & Energy in Ecosystems

3. a type of atom that makes up molecules such as carbon dioxide and energy storage molecules
4. a starting substance that is part of a chemical reaction
5. a type of energy storage molecule
8. matter that makes up the living and dead organisms in an ecosystem
10. the tiny pieces that all matter - all the stuff in the world - is made of
13. all the living and nonliving things interacting in a particular area
14. matter that makes up the nonliving parts of an ecosystem, such as air, water and rocks
15. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms
16. a group of atoms joined together in a particular way
18. a set of interacting parts forming a complex whole

1. an organism that gets energy storage molecules by breaking down dead matter
2. an organism that can make its own energy storage molecules
3. the chemical reaction between oxygen and glucose that releases energy into cells
6. the part of a cell where cellular respiration happens
7. living things, such as plants, animals, and bacteria
9. the process by which plants and other producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose
11. an ending substance that is made during a chemical reaction
12. a closed ecosystem made by humans
17. a molecule made of carbon and oxygen atoms