Across
- 2. type of evolution in which a number of different species arise from one common ancestor
- 5. formation of a new species by evolution from a pre-existing species
- 6. a group of similar organisms that can breed and produce fertile offspring
- 7. elimination of a species
Down
- 1. slow, constant changes over a long period of time
- 3. type of evolution in which unrelated species evolve similar characteristics because they live in similar environments
- 4. two species form a specialized relationship and change in response to each other