ESS

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