Across
- 3. two or more species that reproduce at different times
- 6. the diversification of a group of organisms into forms filling different ecological roles
- 8. when organisms are isolated from each other due to a geographic barrier
- 9. two or more species evolve together in response to changes in eachother
- 10. a system of ideas intended to explain something based on general principles
- 11. the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms
- 12. the elimination of a species
Down
- 1. evolution towards different traits in closely related species
- 2. not able to produce children
- 4. animals capable of breeding but have differences in courtship rituals
- 5. evolution toward similar traits in unrelated species in a similar environment
- 7. an act of describing or identifying something precisely