Emphysema, Lung Cancer, Cystic Fibrosis, etc.
Answer:
The blood picks up co2 and also waste from the tissue. So I am guessing that it is co2.
Hope this helps.
The answer is false. if you are more lean you can be faster that people that might be not as lean or unfit
You can associate with your friends again , it’s better for people who are hands on learners or need examples and things explained to them , and your more likely to do stuff if your there in person
