Across
- 2. how much matter is in an object
- 3. where two plates are moving apart
- 4. group of organisms of the same species
- 7. all the populations living in one area
- 9. is an object that attracts the metals
- 11. they are negatively charged particles in an atom
- 12. organisms working to maintain a steady-state
- 13. the outer part of the earth
- 14. speed of an object
Down
- 1. the place where organisms live
- 5. are positively charged particles in an atom
- 6. a rock formation being broken by a fault/faults
- 7. creates a force, accounts for electric transfers
- 8. the largest layer of the earth
- 10. organisms with nonliving surroundings
- 12. the transfer of thermal energy from hot to cold