Science

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Across
  1. 3. A period of one houndred years.
  2. 4. Something eith a numerous quantity.
  3. 9. A record of geologic events.
  4. 10. When a organism have only one type of cell.
  5. 11. Object to small to be considered a planet.
  6. 12. Three long units of time.
Down
  1. 1. Used in science to compare size or measure proportions.
  2. 2. Earth´searliest era, before complex life appeared.
  3. 5. To repare or remodel something.
  4. 6. A graphic representation of the past of time.
  5. 7. Units of geological time.
  6. 8. The study of rocks.