How does the current, or sixth, mass extinction differ from the past five mass extinction events? a. the sixth mass extinction is believed to be caused by human-related factors. b. the sixth mass extinction is believed to be caused by natural forces. c. the sixth mass extinction is believed to affect relatively fewer species. d. the sixth mass extinction is believed to affect relatively fewer areas.

B. I think but I am not sure

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.