Digestion! It is a group of organs in the body which work together to digest food. Digestion is the process by which our body breaks down food into substances we can take in (absorb) and use. Food travels through the alimentary canal which starts at mouth and ends at the anus.
Answer:
B
Explanation:
The immune system is a system that helps protect the body from viruses and illnesses.
The airway to and inside your lungs are lined with rings made of cartilage that keep the airway open.
Excretory = Urinary: Kidneys, Ureters, Bladder, Urethra
