The answer to this question is bond energy.
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.
Mucous cells is what I think is the answer. hope it helps ;)
Answer:
mouth ⇒ oesophagus (gullet, food pipe) ⇒ stomach ⇒ duodenum ⇒ ileum ⇒ colon ⇒ rectum ⇒ anus
Explanation:
