| Front | What are the three observations Darwin and Wallace made and what are the two deductions they made from this? |
|---|---|
| Back | Obs.1. Organisms produce more offspring than are needed to replace their parents
Obs.2. Natural populations tend to remain stable in size over long periods
Obs.3. There is variation among the individuals of a given species
Ded.1. There is competition for survival
Ded.2. The best adapted variants will be selected for by the natural conditions at the time |
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