Science How did the elk impact the Yellowstone riverbanks? https://kcts9.pbslearningmedia.org/resource/a58e3ca2-52ab-45f5-87ac-26ee0d681146/wolves-of-yellowstone-earth-a-new-wild/ Asked by Evelinka on 08 May 18:00 Last updated by Cat on 09 May 03:11