Natural Selection

Natural Selection

Storyboard Text

  • Starting Population
  • Over Production/Limited Food
  • Variation and Competition
  • These crows live in an environment with a good source of food and no predators.
  • Adaptation
  • The population of the crows dramatically increased and they ate all of the food. Only certain crows are able to find a food source.
  • Differential Survival
  • The crows are competing for food and some crows are smarter and have changed their behavior and found a new way to get food in order to survive.
  • Differential reproduction
  • Certain crows pick up the nuts with hard shells, fly up high, and drop the nuts. The nuts crack revealing the soft inside that the birds eat.
  • The birds that weren't able to get food died, while the smart birds continued to survive
  • The smarter birds survived long enough to reproduce and show their offspring how to get food.
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