Digestion!
B11 Enzymes
Human Biology: Nervous System Lesson 2: Divisions of the Nervous System (Inquiry into Life pg. 326-337)
ENZYMES
tch?v=Uzl6M1YlU3w 500kgWe eat about 500kg of food per year. 1.7 litersWe make approximately 1.7 liters of saliva every day.
Human Biology: Digestive System Lesson 2: Chemical Digestion and Absorption.
Human Biology: Digestive System
