Which step of Koch's postulates is incorrect? A. 1.The pathogen is first found in an infected, unhealthy person. B. 2.The pathogen is isolated from an unhealthy person and grown in a lab. C. 3.The pathogen grown in a lab will be given to a healthy organism that gets the same disease. D. 4.The pathogen should be isolated again and should have mutated when compared to the original.​

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.

I'm soooo sorry but i can't answer but you can ask another professor