Across
- 5. feedback Amplifies changes and destabilizes a system.
- 6. feedback Counteracts changes to keep a system stable.
- 10. Relative abundance of each species.
- 11. selection Individuals with favorable traits survive and reproduce better.
- 12. Random DNA changes that produce new genes.
Down
- 1. All parts of Earth where life exists.
- 2. A single living organism.
- 3. The number of different species.
- 4. Organisms that interbreed to produce fertile offspring.
- 6. Isolated populations evolving into new species.
- 7. Interacting populations of different species.
- 8. Group of the same species living in an area.
- 9. A community plus its non-living physical environment.