Adaptations and Rocks.

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Across
  1. 4. What organisms get their structures from
  2. 7. An organism that has the same structure and is related to Common Ancestor
  3. 8. What is mainly needed in genetics
Down
  1. 1. A law that states the ones on top are the youngest ones and the lower rocks are the oldest
  2. 2. What helps organisms survive in the environment
  3. 3. The foot Print or behinds of an animal/organism
  4. 5. The upgrade of a type of species (Starts with an E)
  5. 6. Another name for Rock Layers