Evolution Crossword

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Across
  1. 5. A trait that helps an organism survive
  2. 6. Process which evolution occurs
  3. 7. When two unrelated species look a like
  4. 8. When new species form due to reproductive isolation
  5. 10. Species that are related share a common______
  6. 11. Proposed the theory of evolution through natural selection
  7. 12. When structures have no use in an organism
Down
  1. 1. Types of selection seen in dogs and other domesticated animals
  2. 2. When different species have similar structures
  3. 3. Diagrams that show evolutionary relationships
  4. 4. Birds studied by Darwin
  5. 9. The ability for an organism to survive in its environment