RESPIRATORY SYSTEM is the process of respiration. The lungs is the main organ of the respiratory system because it receives oxygen and take out the carbon dioxide. DIGESTIVE SYSTEM is the process of digestion. The main organ is the stomach because this is where the digestion occurs.
True .
its false
True .
Yes it is true that excretion is one function of the digestive system. The nervous system is made up of the peripheral nervous system and central nervous system.
true
Heart: Circulatory system. Lungs: Respiratory system.
respiratory system
True
True.
true
False
to bring oxygen in