Carnivore get energy by eating meat living or dead.
Answer:
The heads (the phospho part) are polar while the tails (the lipid part) are non-polar.Its like a front and back type of location with those.
a notochord is definitely the backbone. it appears as a tiny flexible rod made from mesoderm cells. which is one third of the layer of embryos.
i think the medulla?? is the answer
