john wants to test how temperature affects the mass of sugar that can be dissolved in water. which of the following factors will john expect to change in response to the difference between the control group and the experimental group

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.

Iwould have to say the answer would be nitrogen

If there is 200 plants then it should be about fifty