Changes Over Time

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Across
  1. 3. Process by which humans select plants or animals for breeding based on desirable traits.
  2. 6. When two parents produce offspring that share characteristics from both parents
  3. 11. The process by which populations change over time.
  4. 12. The process by which organisms that inherit advantageous traits tend to reproduce more successfully than other organisms do.
  5. 13. A change that affects the activity of an organism (ex. Light, sound, etc.)
  6. 14. Standard method used to divide Earth’s long 4.6 Billion year natural history.
  7. 15. Genetic material that control the structure and function of a cell.
Down
  1. 1. Remains or imprints of once-living organisms.
  2. 2. Important sources of variation, or a changes in genetic material
  3. 3. When a single parent produces offspring genetically identical to the parent
  4. 4. Occurs when all members of a species have died.
  5. 5. Maintenance of a stable internal environment
  6. 7. Provides evidence about the order in which species have existed through time.
  7. 8. An inherited trait that helps an organism survive and reproduce in its environment.
  8. 9. membrane-covered structure that contains all the materials necessary for life.
  9. 10. Natural differences within a species resulting from a difference in genetic material.