While you are breathing into a plastic bag,
1. What happens to the levels of carbon dioxide in the bag?
2. What happens to the levels of carbon dioxide in your lungs?
3. What happens to the levels of carbon dioxide in your blood?
4. What happens to the levels of carbon dioxide in your brain?
While you are breathing into the plastic bag,
5. What happens to the levels of OXYGEN in the bag?
6. In your lungs, blood, and brain?
7. What change would you predict in how long you can hold your breath after breathing into the bag?
