Variations within a species are an important part of Charles Darwin's theory of evolution. Which example can be explained by individual variation? The food source in a lake is not enough to support the bass population, but it can support the trout. A population of brown bears has doubled in the past 10 years as its habitat size has increased. Owls and foxes compete fiercely against each other for small rodents in their habitat. Brightly colored cardinals are better able to survive and to reproduce than darker cardinals

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.

Yes yes yes very good

Sorry  i don't understand can you rephrase that