Across
- 9. the amount of time it takes for half of a specimen's Carbon to decay
- 11. formation of a new species
- 14. unrelated organisms develop similar characteristics
- 16. A population of interbreeding organisms capable of producing fertile offspring
- 18. structures which are not used but still there (tiny)
- 19. previously related organisms become less alike
- 20. remains/tracing of a once-living organism
- 21. Age determined through analysis of chemical and physical properties of rocks/fossils
Down
- 1. the study of the history of life on earth
- 2. selection darwin came up with evolution because of
- 3. form of an element with the same no. of protons but different no. of neutrons
- 4. Structures similar in function, but not in the design
- 5. Determine the approx. age of a specimen
- 6. What is the evolution
- 7. the process by whereby organisms better adapted to their environment tend to survive and produce more offspring.
- 8. structures similar in design but not in function
- 10. many related species evolve from a single ancestral species
- 12. one mate selects the other
- 13. the process by which different kinds of living organisms are thought to have developed
- 15. of species darwins first book
- 17. the study of the development of different organisms
