Across
- 2. a scientist who studies fossils
- 3. The theory that life on earth descended from non-living things.
- 5. The theory that eukaryotes were once formed by prokaryotes that swallowed each other but lived together instead of digesting each other.
- 6. the theory that geologic processes take place at the same rate.
- 7. The theory that all life is descended from living things
- 8. changes in groups of living things over time
- 9. a method of dating fossils by tracking the radioactive breakdown of the rock
- 11. the amount of time that it takes for a radioactive sample to break down to half its original amount
- 12. breeding of organisms to produce desired traits. (ex. Labradoodles)
- 13. The remains of an organism
- 14. the process that results in the survival of the fittest by means of illness, predation, etc.
Down
- 1. the apparent jump in the biodiversity on top of the PreCambrian layer. Marks likely beginning of flood.
- 4. old theory that life can spring from dead or inanimate objects. (Ex. maggots grow when you allow meat to spoil)
- 10. layers of sedimentary rock that represent the rapid deposition of flood-borne sediment. Divided into 13 periods by geologists and paleontologists.