General science · Difficulty 1
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which organ system exchanges oxygen and carbon dioxide with the environment?
- Digestive
- Respiratory
- Skeletal
- Endocrine
Reveal answer and explanation
Respiratory
The respiratory system performs gas exchange, mainly through the lungs.