Natural Selection

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Across
  1. 2. is the biological process by which new individual organisms offspring are produced
  2. 3. the surroundings or conditions in which a person, animal, or plant lives or operates.
  3. 6. the action or process of adapting or being adapted
  4. 7. the state or fact of continuing to live or exist, typically in spite of an accident, ordeal, or difficult circumstances
Down
  1. 1. the differential survival and reproduction of individuals due to differences in phenotype
  2. 4. a change or difference in condition, amount, or level, typically with certain limits
  3. 5. the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.