Across
- 3. Last step in the process of speciation
- 5. The source of variation in a species' DNA
- 7. Number and range of different species that exist on earth
- 8. Father of Evolution
- 10. First step in the process of speciation
Down
- 1. Islands in which Darwin studied the various species of Finches
- 2. The idea that different populations are prevented by some mechanism from interbreeding
- 4. Slow change in a species over time describes Darwin’s theory of ______
- 6. Process by which one species splits into two or more separate species
- 9. Competition between members of a species for a particular need is known as selection _____