A 7th grade student has convinced one of your 7th grade friends that abiotic and biotic
factors have no impact on populations in ecosystems. Your task is to construct a convincing
argument for your friend in the form of a letter, that abiotic factors and biotic factors do affect
populations in ecosystems. You may use the resources in your composition book to help
compose and provide evidence for your argument. The following resources may be helpful:
Predation or Starvation on p. 33, Predator/Prey Relationship on p. 18, Carrying Capacity Box
Lake on p. 24 , and Kaibab Deer Graph on p. 21.