Chapter 1.1

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Across
  1. 1. anything that has or once had all the characteristics of living organisms.
  2. 5. arranged in an orderly way.
  3. 6. the natural changes that take place during the life of an organism.
  4. 8. a group of organisms that can breed with one another and produce fertile offspring.
  5. 10. the reaction to a stimulus.
Down
  1. 2. the production of offspring.
  2. 3. a person who studies biology
  3. 4. anything in either environment and causes a reaction by the organism.
  4. 7. the science of life.
  5. 9. the addition of mass to an organism and the formation of new cells.