Science vocab words

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Across
  1. 3. orginisms better adapted to the environment survive
  2. 4. a change in genetics
  3. 6. to many of one thing
  4. 7. how many children an animal has
  5. 8. an event that drastically reduces the population of an orginism
  6. 9. inhereting a gene
Down
  1. 1. variation in an animal
  2. 2. the change in how often a gene is seen
  3. 5. how often a gene is seen