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1
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2
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- Geologic
- 1. trilobites
- 2. subdivisions
- a. Eons
- b. Eras
- c. Periods
- d. Epochs
- 3.
- Organic
- 1. reproduce
- 2. selection
- 3. survival
- 4. Artificial
- 5. New
- C.
- 1. eye
- 2. tails
- 3. Pangaea; Era;
- sea levels
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3
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- Precambrian
- 1. fossils
- a. heat
- b. hard
- 2. algae
- a. earliest
- b. oxygen
- 3. Invertebrates
- Paleozoic
- 1. shells
- 2. Amphibian
- a. fish
- b. gills
- 3. Reptiles
- 4. plate
- 5. extinct
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4
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- Mesozoic
- 1. continents
- 2. Dinosaurs
- 3. Birds
- 4. mammals
- 5. Gymnosperms
- 6. angiosperms
- 7. 65 million
- Cenozoic
- 1. mountain ranges
- 2.
- a. isolated
- b. humans
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5
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