Across
- 2. Atoms chemically combined.
- 4. Tendency of an object to resist changes in motion.
- 5. Fundamental unit of all living things.
- 10. Path for electric current.
- 11. Coming closer together
- 13. Attractive force between objects.
- 14. Material with mass/volume.
- 17. Major regional ecological areas.
- 18. Layer of gases surrounding a planet.
Down
- 1. A change in an organism's DNA.
- 2. A process altering a substance's chemical composition.
- 3. Object that attracts iron/steel
- 6. Resistance between surfaces.
- 7. The speed of an object in a specific direction
- 8. the biological process by which new individual organisms are produced
- 9. Moving apart in different directions
- 12. Natural selection drives adaptation
- 15. Movement of soil/rock by natural forces.
- 16. Ancient super-continent joining all Earth's landmasses together
- 18. The basic unit of matter containing protons, neutrons, and electrons.