Across
- 4. Difference between members of a species that can be good or bad
- 5. Evolution says that some species came from a common ___
- 6. The larger this is, the more biodiversity there is likely to be
- 7. Something in nature that can isolate members of a species
- 12. Difference between members of a species that are beneficial
- 13. Similar body structures
- 14. To pass on genes, organisms must ___ and reproduce
- 16. When too many of a species are in an area
- 17. Scientist who came up with theory of natural selection
- 18. When a species is quite close to extinction
- 19. Warmer, moister ones lead to more biodiversity
Down
- 1. One of the types of evidence used to support theory of evolution
- 2. Survival of the fittest
- 3. When members of a species are completely separated from the rest of the species
- 8. Type of selection where humans determine what animals are bred
- 9. Slow change over time
- 10. A species role in an ecosystem
- 11. The number of different species in an area
- 15. When a species first gets in danger of going extinct