Across
- 2. a system with living and non living things in nature
- 4. the subsystem in which all life exists
- 5. the fancy word for sugar that producers make
- 10. The process producers make their own food
- 12. a small system within a system
- 13. the subsystem with rocks and minerals
- 14. an organism that only eats plants
- 15. arrows show the transfer of this
Down
- 1. an organism that only eats meat
- 3. an organism that eats both plants and meat
- 6. has to eat another organism for energy
- 7. breaks down dead plants and animals
- 8. Makes their own food
- 9. the subsystem with all of Earth's water
- 11. the star most of our energy comes from