I believe that would be the daily hassle.
Esophagus is the correct answer.
Take compliments gracefully on how well you did. The best for you self esteem and being a good sportsmanship
Arrange in two layers, called the phospholipid bilayer. Phospholipid molecule has a head, and two tails. The head is hydrophilic (it likes water) and the tails are hydrophobic (phobic meaning it has a phobia of water, or in simple words, hates water).
Both of Michael Phelps and Caleb Dressel are professional swimmers ( freestyle swimming) so D