Across
- 3. allows an organism to survive and reproduce in its environment
- 5. a process where individuals that are better adapted to their environment are more likely to survive and reproduce than othersthat are not
- 6. the variety of organisms that inhabit the Earth
- 7. the preserved remains or traces of an organism that lived in the past
- 9. the disappearance of all members of a species from Earth
- 11. The 1ST word of a two word process where scientists look at the half-life of chemicals contained in rocks around a fossil to determine the Age of the fossil
- 12. evolutionary process by which reproductively isolated biological populations evolve to become distinct species
- 13. a species on earth that is surviving and thriving
- 14. gaps in the fossil record that provide proof of evolution
- 16. any change in the DNA of an organism.
Down
- 1. naturalist who formulated the theory of evolution by natural selection
- 2. any difference between organisms of the same species
- 4. similar structures that related species have inherited from a common ancestor (example – bones in bird’s wing, dolphin fin, and dog leg are very similar)
- 8. the gradual change in species over time
- 10. Vessel that carried the naturalist that studied organisms in the galapagos
- 15. had diverse traits they exhibited on each of the different islands. Each species was best adapted to the food, climate, etc. of the island on which they lived.