Across
- 3. the cycle of energy
- 4. living
- 5. a living things
- 7. a graph that shows animals rank in the chain
- 10. they clean the soil
- 11. a animal that eats other animals
- 12. they make their own food and water
- 15. a reaction in the tissue
- 17. a chemical necessary for photosynthesis
- 18. a organized group a of beings
Down
- 1. a moment in response to an element
- 2. a factor that limits activity
- 6. a state of inactive behavior
- 8. a adjustment that helps one survive
- 9. they eat other beings
- 12. the amount of a certain species
- 13. a place were biotic and abiotic work together
- 14. nonliving
- 16. a place with certain characteristics