Question 2
Which organ excretes carbon dioxide?
The right answer is the one marked above.
The lungs. They breathe it out with water vapour.
Lesson: Chapter 6 — Human body processes
6.3. Excretion and the urinary system
2 of 4
Clear all your answers?
This erases every answer in this set and starts you again at question one. Your score will be gone.
Type these four numbers to confirm:
Those numbers don't match. Look at them again and type them.
This browser is not saving your answers, so no total can be shown.
Answer the question to continue.