What role do stomach enzymes play in digestion?
A. They transfer food out of the esophagus.
B. They break down food into smaller parts.
C. They move food down into the intestines.
D. They physically mix food with stomach acid.
A. They transfer food out of the esophagus.
B. They break down food into smaller parts.
C. They move food down into the intestines.
D. They physically mix food with stomach acid.