Ryan Hartmann

Ryan Hartmann

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Storyboard Text

  • Overproduction of offspring
  • Variation in color
  • Structure adaptations
  • There is an overproduction of offspring, because many rats will not make it into adulthood.
  • Physiological adaptations
  • The rats vary in color; some are white, and some are black.
  • Behavioral adaptations
  • More of the black rats survive because they have adapted to their environment and blend in more.
  • Genes get passed
  • The rats adapt to feed more at night, so they're not as likely to be seen by predators.
  • During the day, the rats hide under rocks and in wooded areas where the birds can't eat them.
  • Genes get passed down and majority of the population is black.
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