Explain both food and light as zeitgebers, Biology

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Must account for both food AND light as zeitgebers

  • Because of the continuous light / dark periods of the year; light not always able to act as a zeitgeber.
  • Food is essential for survival at these latitudes (build up of fat layer) so being able to anticipate seasonal food availability to synchronizing feeding to is an important survival mechanism
  • Feeding continuously through summer is important to build up fat reserves for winter months.

 


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