Which of the following makes up the dense outer layer of bone?
a. compact bone
b. spongy bone
c. bone marrow
d. periosteum

The answer to your question is the compact bone .

The answer to the question is

A. compact bone

Compact bone is dense and hard, which makes it strong. Spongy bone, further inside, has many gaps and is lightweight. This allows bone to be strong and light at the same time.

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.

Oh dog