Theroy or hypothesis thats what i think it is
It allows them to move smoothly, without getting entangled or broken
Answer:
B and C
Explanation:
Because of its Structure which is made up of Microtubules in (9+2) arrangement
Answer: i think, Endochondral ossification occurs at two distinct sites in the vertebrate long bone – the primary (diaphyseal) and the secondary (epiphyseal) sites of ossification. Bone development initiates at the primary site. The secondary (epiphyseal) site is under independent control and is ossified later (Figure 1b).
