Hemoglobin consists of two alpha globin polypeptides and two beta globin polypeptides. Which level of protein structure is present in hemoglobin but is absent in the alpha and beta polypeptides that make up hemoglobin?

When you are making a guess you are forming a hypothesis

idk but if i had to take an educated guess i’d say a c d

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.