Fossils
- Created by: Sarah Tite
- Created on: 09-12-12 20:56
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- Fossils
- New Species
- Result of Isolation
- A species becomes geographically seperated
- Result of Isolation
- Speciation
- populations become sodifferent
- interbreeding cannot happen anymore
- populations become sodifferent
- Speciation
- Extinction
- Competing for
- Food
- Water
- Space
- Competing for
- fossil records
- Evidence of species before life
- Extinction
- Fossils
- Often incomplete
- Evidence for early forms of life
- learn how organisms have changed
- Theory of evolution
- Variation
- wide range of alleles that control their characteristics
- Natural Selction
- alleles which help an organism to survive
- selected in each population
- alleles which help an organism to survive
- Extinction
- New more succesfful competitors
- Changes to enviroment - Geological change
- New Predators
- New Diseases
- New Species
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