Unit 5

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Across
  1. 3. The way living things slowly change over many years.
  2. 4. A group of animals or plants that can have babies together.
  3. 5. When one kind of animal slowly becomes two new kinds.
  4. 7. A change that helps an animal or plant live better in its home.
  5. 12. The scientist who explained how animals change over time.
  6. 14. A feature or part of how something looks or works.
  7. 15. A chart that shows how living things are related.
  8. 18. When living things make more of themselves.
  9. 19. When a kind of animal or plant is gone forever.
  10. 20. When animals become more different over time.
  11. 21. A group of the same kind of animal or plant living in one place.
Down
  1. 1. When animals fight for food, space, or mates.
  2. 2. When different animals get similar traits because they live the same way.
  3. 6. The remains of old plants or animals found in rocks.
  4. 7. Different forms of a gene that decide traits.
  5. 8. A tree that shows how species are related by their history.
  6. 9. Helping others, even if it doesn’t help you.
  7. 10. The way scientists sort and name living things.
  8. 11. Having many different kinds of plants or animals.
  9. 13. The family history of an organism.
  10. 16. How well an animal survives and has babies.
  11. 17. A change in DNA that can make something new.