Which of these is an example of mechanical digestion?
A. Food moving down the esophagus
B. Teeth biting and grinding food into a paste
C. Saliva softening food chemically in the mouth
D. Nutrients being absorbed into the bloodstream
A. Food moving down the esophagus
B. Teeth biting and grinding food into a paste
C. Saliva softening food chemically in the mouth
D. Nutrients being absorbed into the bloodstream