Evolution: slow change

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Across
  1. 2. the environment determines that the average trait is the best
  2. 3. Darwin's boat
  3. 5. Darwin's destination
  4. 6. similar organisms that can reproduce together
  5. 8. a group of organisms that can produce fertile offspring
  6. 9. the environment determines which organisms are best able to survie and reproduce
  7. 10. genetically determined or learned characteristic of a particular organism
  8. 11. too large group of organisms, hopefully having variation
Down
  1. 1. the environment determines that two extreme traits are the best
  2. 4. small differences within a population necessary for evolution
  3. 7. one population of organisms becomes two species through isolation or divergent selection