Biological Evolution

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Across
  1. 3. a theory that says all species evolved gradually
  2. 4. changing to fit the needs of the organism in a new area
  3. 5. when a species dies out completely
  4. 8. a group of organisms with similar individuals
  5. 9. all species develop through natural selection and increase ability to survive
Down
  1. 1. changing the genes of an organism to change an organism
  2. 2. the change in a species over several periods of time
  3. 3. differences in genetics from the same species
  4. 6. the process of animals adapting to survive in a new environment
  5. 7. any organism that is taking up space and is different from its suroundings