Across
- 1. Any inherited characteristic that increases an organism’s chance of survival.
- 3. Natural selection __ a species fitness in its environment
- 4. Because Darwin’s findings went against the church, Darwin felt __ by his discoveries.
- 9. The Galapagos tortoises, finches, mockingbirds, marine iguanas, and many plants were __ to the Galapagos and nowhere else.
- 11. In his book, On the Origin of Species, Darwin proposed a mechanism for evolution called __.
- 12. The ability of an individual to survive and reproduce in a specific environment is called __
- 13. The second component to Darwin’s theory of evolution is __
- 14. Darwin noted that he Galapagos Island species looked a lot like species of __, but the island species were different from the mainland species.
Down
- 2. Using __, farmers select the variations they find useful and produce a wide range of plants and animals that look very different from their ancestors.
- 5. Darwin’s work abandoned the idea of a species as perfect and __
- 6. Upon Darwin’s return to England he learned that his Galapagos brown birds were not separate species of wrens, warblers and blackbirds, there were all
- 7. Darwin received a short essay by __, summarizing Dawin’s 25 years of work!
- 8. Darwin’s theory of evolution starts with the presence of __ in the population.
- 10. All living things share the same __