Across
- 5. center of earth, made of iron and nickel
- 8. system where energy but not matter is exchanged with surroundings
- 9. enters the soil and water when rock breaks down in this cycle
- 13. makes up 78% of atmosphere
- 15. thin outermost zone of the earth
- 17. earth's actual shape
- 18. sequence in which organisms consume others
- 19. largest population an environment can support
- 20. community of organisms and their abiotic environment
- 21. break down dead organisms
Down
- 1. layer of earth that flows under pressure
- 2. related objects that interact to create a whole
- 3. condensation, precipitation, and evaporation make up this cycle
- 4. make their own food
- 5. get energy from eating other organisms
- 6. carbon dioxide and glucose make up this cycle
- 7. relationship between food chains
- 10. group of processes where matter moves through reservoirs
- 11. force of attraction between all objects
- 12. part of crust and upper part of mantle
- 14. system in which matter and energy are exchanged with surroundings
- 16. layer of earth that makes up 2/3 of earth's mass