Across
- 1. having many offspring to ensure some will survive
- 4. features that are similar in structure but have different functions
- 5. the process of biological change
- 7. geologic processes that shape the Earth are uniform through time
- 8. features that have similar functions but different structures
- 10. changes in landforms result from slow changes over long periods of time
- 12. the study of the distribution of organisms around the world
- 14. proposed a system of organization for organisms
- 16. heritable traits become more common
- 17. the ability of a trait to be passed down
- 18. traces of organisms that existed in the past
- 20. all the individuals of a species living in an area
- 21. proposed the theory of evolution by natural selection
- 22. a measure of the ability of an organism to survive and reproduce
Down
- 2. remnants of organs or structures that no longer serve a purpose
- 3. natural disasters have happened during Earth's history
- 6. proposed evolution occurred due to environmental changes
- 9. feature that allows an organism to better survive
- 11. a group of closely related organisms
- 13. humans change a species by breeding for certain traits
- 15. differences in physical traits among a group
- 19. the environment determines which traits will be a beneficial adaptation