Across
- 1. Changes in land forms result from slow changes over a long period of time
- 3. Geologic processes that shape earth are uniform through time
- 11. Measure of an organism's ability to survive and produce offspring
- 13. Natural disasters such as floods and volcanic eruptions shaped Earth's land forms and caused extinction of some species
- 14. Process by which one species evolves and gives rise to many descendant
- 15. Continued existence of organisms that are best adapted to their environment
- 17. Humans breeding organisms for desired traits
- 18. Body part that is similar in structure on different organisms but performs different functions
- 20. Feature that allows an organism to better survive in its environment
Down
- 2. Evolution of two or more species from one ancestral species
- 4. Body part that is similar in function as another organism but is structurally different
- 5. Isolation between populations due to physical barriers
- 6. speciation occurs suddenly and rapidly followed by long periods of little evolutionary change
- 7. Ability of a trait to be passed from one generation to the next
- 8. All the individuals of a species that live in the same area
- 9. Remnants of an organ or structure that functioned in an earlier ancestor
- 10. Elimination of species from Earth
- 11. Trace of an organism from the past
- 12. Organisms better adapted to their environment tend to survive and produce more offspirng
- 16. Difference in physical traits of an individuals in a species
- 19. Change in species over time