I think the correct answer is C.
Answer:
okay !!!!!!
Explanation:
this is school app so we shouldn't put the picture of any unwanted things !!! you are right
Answer:
It is brought into the lungs when the healthy person is inhaling, once they exhale some oxygen is let out.
Explanation:
I'm not very sure what you were asking I hope this helped.
The best source of internal motivation is yourself, challenge yourself to get better results