Answer:
drawing
Explanation:
Draw:
Draw 2 water molecules, H2O. connect the Hydrogen to the Oxygen.
Air must pass from the back to the front of the pharynx to enter the trachea and food must pass from the front to the back of the esophagus
1: UV wave.
2: green.
(I hope this helped.)
Enzymes is a substance produced by living organisms thats acts as a catalyst to bring about a specific biochemical reaction. <span />