__________ is an amino acid that can help people sleep and can be found in a glass of __________.
A. Teratogen; orange juice
B. Tetracycline; natural sparkling water
C. Tryptophan; milk
D. Thalidomide; wine
Answer:C
__________ is an amino acid that can help people sleep and can be found in a glass of __________.
A. Teratogen; orange juice B. Tetracycline; natural sparkling water C. Tryptophan; milk D. Thalidomide; wine