O do not receive enough oxygen during a strenuous exercise.
<span>Frogs are classified in the phylum chordata subphylum vertebrata, class amphibia, order -Anura.</span>
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).
