Across
- 6. The process of releasing energy from food using oxygen
- 8. The frozen soil found in very cold regions
- 10. The breakdown of dead plants and animals
- 12. The process in which plants use sunlight to make food
- 14. A gas released by animals and plants during cellular respiration
Down
- 1. Light and heat energy from the sun
- 2. The region around the North Pole
- 3. Solid, liquid, or gas that takes up space and has mass
- 4. A type of organic material made from decayed plants in wetlands
- 5. A material burned to produce energy
- 7. The ability to do work or cause change
- 9. A chemical reaction that produces heat and light
- 11. A gas used by plants for photosynthesis (an input)
- 13. A sugar used by living things for energy