Biology EOY Project Eden Asbill

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Across
  1. 2. outer protein coat of a virus
  2. 3. basic unit of all living organisms
  3. 5. characteristics developed over time to help a species survive
  4. 7. body system responsible for fighting infection
  5. 8. non-living cell that requires a host to replicate
Down
  1. 1. degree of variation among species in an ecosystem
  2. 4. a period of little/no evolutionary change
  3. 6. a group of organisms that can reproduce