EVOLUTION
Across
- 7. used by Charles darwin on his voyage.
- 11. he said that "individuals in a species are basically identical abd sprecies are unchanging."
- 12. the science of describing, naming, and classifying specie
- 14. used for determining the age or date of organic matter.
- 15. the intentional breeding of plants or animals.
- 16. generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point.
- 18. the study of pastlife.
- 19. proposed the idea of natural selection
- 20. the first one to used the phrase "survival of the fittest"
Down
- 1. used by scientist to devide the history of the earth into eons and eras.
- 2. is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose.
- 3. are similar structures that evolved independently in two living organisms to serve the same purpose.
- 4. the artificial manipulation, modification, and recombination of DNA to modify an organism.
- 5. remains of ancient organisms
- 6. the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
- 8. genetic change over time
- 9. small evolutionary changes that accumulate in a population.
- 10. the theory that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
- 13. an island that helped charles darwin to develop his theory of natural selection and also helped investigate evolutionary changes in Darwin's finches.
- 17. in his theory he believed that giraffes once had short necks that got progressively longer as members of each subsequent generation stretched their necks as long as they could.