The amino acids in a polypeptide chain are linked by peptide bonds. Once linked in the protein chain, an individual amino acid is called a residue, and the linked series of carbon, nitrogen, and oxygen atoms are known as the main chain or protein backbone.
Could be shingles
could be her going too fast in the water
there are many different reasons
all you have to do is search in Google pain from swimming
Adults need at least 150 minutes of moderate-intensity physical activity and should perform muscle-strengthening exercises on 2 or more days each week.
The large intestine absorbs water from the remaining indigestible food, then works to transmit the waste from the body.