Evolution

Evolution

1. Adaptation

   • Beneficial Traits
     • helps survive longer
     • helps reproduce successfully
     • Environment determines

2. Natural Selection

   • Species live in particular environments
     • Competition
       • Always existing
       • Food, water, space, mates
       • show some variation in physical traits
   • Change in environment
     • Biotic
       • Predator/food source
       • Living change
     • Abiotic
       • Non-living change
       • ex. Climate and pH change
   • Individual w/ mutation
     • survives longer
       • reproduces more
   • Generations pass
     • trait becomes common
       • those w/o trait dies off
         • Species change for the better
           • adaptation throughout

3. Variation

   • In DNA
     • Mutation
     • Recombination
   • All populations show