Across
- 1. the thin top most layer, floats upon the softer, denser mantle
- 4. cell formed by union of 2 sets of gene when male and female gamete unite
- 5. destructive process when water and wind loosen fragments of rock
- 11. super continent
- 13. circular flow of matter in currents in heated material
- 15. break in earth's crust
- 17. boundary between the earth's crust and mantle
- 19. anything that can be changed in an experiment
- 20. gene combination that determines phenotype
Down
- 2. continuous flow of liquid, air or gas
- 3. strong form of gene
- 6. the top layer of earth covered by the ocean
- 7. weak spot in crust where magma comes to the surface
- 8. natural feature of earth's surface
- 9. rigid upper layer containing the crust and upper mantle
- 10. shaking that results from the movement of rock under earth
- 12. the breaking down of rocks and materials into small pieces due to weather
- 14. a bend in rock
- 16. one pair of genes that appear at a particular location on a particular chromeosome
- 18. soft interior of earth that lies above the core
- 20. 3D model of earth