D. cell wall
both animals and walls have cell membranes for support
the cytoplasm holds the organelles in place
A fossil of a mammal. A mammal is any warm blooded vertebrate.
I would say the answer is a
Answer:
Provides more strength.
Explanation:
It is functionally important that the bones of the os coxae fuse together rather than remain independent bones because the fusion of bones of the os coxae increases their strength and they can perform their function very well. If the fusion of bones of the os coxae did not occur and they remain independently so they can't bear the load of the body and so the function is also adversely affected.
