Q: What two systems are the lungs part of?


Read this paragraph and choose the correct option from the provided answers:

The organs of the excretory system are also parts of other organ systems. For example, your lungs are part of the respiratory system. Your lungs remove carbon dioxide from your body, so they are also part of the excretory system. More organs of the excretory system are listed below ( Table below ).

 Choices:

- stomach and excretory

- heart and excretory

- stomach and nervous

- respiratory and excretory


A:
respiratory and excretory