Across
- 4. adding harmful things to through it
- 7. a type of the small particle found in soil
- 8. a cluster of billions stars in space
- 9. the place wheres organism live
- 10. the remains of planet and animals from millions of year ago
- 11. all the matter and energy that exist
- 12. the inner part of the earth
- 13. the rock whos fall in the earth
Down
- 1. the path of one object around another
- 2. a diagram showing how energy passes from one organism to another
- 3. something which can be stored and which can be used to order other things
- 5. Molten rock (magma) emerging onto the earth surface
- 6. the sun and all oject moving around