Apopulation of bacteria is treated with hand sanitizer. because of genetic variation in the population, what is a possible outcome

A possible outcome would be that some bacteria would be immune to hand sanitizer and live. These bacteria would be able to produce offspring, leading to a whole new generation that is immune to the hand sanitizer.

Digestion because it removes waste

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.