List 3-4 relationships you observed in the Elephant video. Identify each relationship as Predator-Prey, Parasitism, or Mutualism.

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food