1. The article “Yellowstone Ecosystem Needs Wolves and Willows, Elk and . . . Beavers?” by Cheryl Dybas was published by the National Science Foundation. How does this lend credibility to the article? 1.It shows that the article appears in science textbooks nationwide2.It shows that the article is factual because scientific studies are always sound.3.It shows that the studies in the article were fully funded by the national government.4.It shows that the author has earned the respect of this reputable organization.2. What is an appropriate question to ask after reading “Yellowstone Ecosystem Needs Wolves and Willows, Elk and . . . Beavers?” by Cheryl Dybas? How will the reintroduced beavers build their dams if the elk have eaten all of the willows?How many rivers are there in Yellowstone National Park?What information will the article provide about the ecosystem of Yellowstone National Park?What is the relationship between declines in the wolf and beaver populations in Yellowstone National Park?