Nutrients

3. / A waste gas produced by plants during photosynthesis
7. the organ where food is reduced to mush by acid and muscle activity
11. A small system that is inside a larger system
12. The process of breaking down food into nutrients that can be used by cells
13. / A nutrient, such as sugar and starch, that provides energy
14. / The nutrient that cells use for energy
15. / The basic unit of life
16. A collection of interacting parts

1. the state of being at rest
2. / A process used by plants and algae to make sugar (food) out of light, carbon dioxide, and water
4. / A sugar found in food; the sugar broken down in cells to release energy
5. / A chemical in food that helps keep an organism alive and active
6. No longer of use, excess
8. Dioxide / Plants produce this gas during photosynthesis to make food
9. / The molecule in plant leaves that turns it green
10. The tube connecting the mouth and the stomach