Life Over Time Vocabulary

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Across
  1. 4. get energy by absorbing materials
  2. 5. trace or imprint of living thing that is preserved
  3. 6. genetic material that controls the structure and function of cells
  4. 9. multicellular organisms that lack cell walls
  5. 10. process by which populations change over time
  6. 12. group of organisms that are very closely related
  7. 14. inherited trait that helps an organism survive and reproduce in its environment
Down
  1. 1. maintenance of a stable internal environment
  2. 2. when every individual of a species dies
  3. 3. change in genetic material
  4. 7. membrane-covered structure that contains all of the materials necessary for life
  5. 8. includes similar species
  6. 11. time scale to divide Earth's history
  7. 13. change that affects the activity of an organism