Instructions Use the passage and the graph below to answer the questions. PIELIPILLION Part I: Wolves of Yellowstone 2 1 point Categorize each of the events in the graph as a biotic or abiotic factor Although wolf packs once roamed from the Arctic tundra to Mexico hunting elk and other prey species, loss of habitat and extermination programs by humans led to their demise throughout most of the United States by early in the 1900s. In 1973, the US Fish and Wildlife Service listed the northern Rocky Mountain wolf (Canis lupus) as an endangered species and designated greater Yellowstone National Park as one of three recovery areas. From 1995 to 1997, 41 wild wolves from Canada and northwest Montana were released in Yellowstone National Park. As expected, wolves from the growing population dispersed to establish territories outside the park where they are less protected from human-caused mortalities. The park helps ensure the species' long-term viability in Greater Yellowstone and has provided a place for research on how wolves may affect many aspects of the ecosystem. Biotic Factors Abiotic Factors No Answers Chosen No Answers Chosen Possible answers The graph below shows the population census data for elk, in Yellowstone National Park from 1929-2003. Elk are one of the largest species within the deer family. 22000 Wolves Reintroduced Drought Begins 15000 Last War Shot Yellowstone Fres Yellowstone Fires Last Wolf Shot 12000 8000 Wolves Reintroduced 3 4000 Drough Bogins 3 points Assume the carrying capacity of elk in this ecosystem is just around 18,000 individuals. Select one of the biotic and one of the abiotic factors from above and explain how each factor directly impacted the elk population. what are biotic and abiotic factors of this