Natural Selection & Adaptations

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Across
  1. 2. ability to survive and reproduce
  2. 4. any living thing
  3. 5. a feature of a person, or other organism (eye color, hair color, etc.)
  4. 8. The cactus that did not have thorns _________ in population.
  5. 11. physical or behavioral changes that an organism can have based on their environment
  6. 12. traits that can be passed down to future generations
Down
  1. 1. The _______ the fossil in the ground, the older it is.
  2. 2. fossils and the rock layers they are found in
  3. 3. A _____________ trait helps and animal survive.
  4. 6. layers of rock that are deposited on top of one another
  5. 7. process by which an organism produces offspring
  6. 9. all individuals of one species in a specific area
  7. 10. mineralized remains of long-dead organisms