Unit 2- Adaptations and Natural Selection

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Across
  1. 3. the person who created the theory of Evolution by Natural Selection
  2. 5. a random error in genes that leads to a change
  3. 8. the gold goldfish population _____ when the water was polluted
  4. 9. some of them were good at catching certain foods and other died off
  5. 10. adaptations that the animal is born with, like fur color
  6. 11. offspring of 2 different species
  7. 12. the brown goldfish population ______ when the water was polluted
  8. 13. a characteristic or trait that improves an organism's ability to survive
  9. 14. their long necks were best fit for their environment so they survived
  10. 16. a species changing over a long period of time
Down
  1. 1. humans choosing desired traits for plants/ animals and breeding them to have those traits
  2. 2. animals blending into their environment
  3. 4. process of nature choosing traits that help the animal survive, those who are not best fit will die off
  4. 6. normal differences and changes in traits in a species
  5. 7. adaptations that are learned and become habits/ instincts
  6. 15. genes of a plant are changed to get a desired result