Here's an example of re-introducing a single species to an ecosystem https://www.nps.gov/yell/learn/nature/wolf-restoration.htm https://www.nps.gov/yell/learn/n

Here's an example of re-introducing a single species to an ecosystem https://www.nps.gov/yell/learn/nature/wolf-restoration.htm https://www.nps.gov/yell/learn/nature/wolf-restoration.htm No imagine halving the number of species in yellowstone