Life Over Time

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Across
  1. 3. The variety of life in a particular habitat or ecosystem.
  2. 5. Preserved remains or traces of ancient organisms.
  3. 6. The lineage or genetic heritage of an organism.
  4. 8. The passing of traits from ancestors to descendants.
  5. 10. The process of change in species over time.
  6. 11. The structure of an organism or its parts.
Down
  1. 1. A widespread and rapid decrease in the number of species on Earth.
  2. 2. A wide variety of different organisms in an ecosystem.
  3. 4. Fossil – A fossil showing traits of both ancestral and derived species.
  4. 7. No longer in existence.
  5. 9. A group of organisms capable of interbreeding and producing fertile offspring.