1. Think about an arthropod such as an ant, and a vertebrate such as a lizard. what functions do the skeletons of there animals have in common? do they have a common structure? Explain.
2. Why do you think that spongry bone has an outer layer od compact bone?
3. Think about the possibible movements of your lower arms and lower leg. How do the movements differ and why?
( please provide a detailed answer)