Across
- 3. provides the energy for food chains
- 5. something that is not alive, never lived, and was not part of something living
- 8. eats meats
- 10. one species benefits, the other is neither helped nor harmed
- 12. makes its own food
- 13. the amount of energy that moves from one energy level to the next
- 15. used during the life processes
- 16. made by glucose/food
- 18. made up of weathered rocks, minerals, humus, water, and air
- 20. living or once was living
- 21. mix and sand, clay, and silt
- 23. how an ecosystem changes over time
Down
- 1. must eat something for energy
- 2. eats plants
- 4. one species benefits, the other is harmed in some way
- 6. recycles dead organisms and waste
- 7. uses water, light, and carbon dioxide
- 9. the variety of life on Earth
- 11. a close relationship which benefits at least one of the species
- 14. eats plants and meats
- 17. all the members of one species living in an area
- 19. eats dead animals
- 22. both species benefit from the relationship