PLZ HELP I WILL MEDAL PLZ PLZ PLZ HELP!!!!!!!!!!

Question

anonymous · Answer

1. The functions of the respiratory system are (select all that apply) 
A. to pump blood to your body 
B. to deliver oxygen to the body 
C. to remove carbon dioxide from the body 
D. to absorb nutrients 

2. The dome-shaped muscle that lies below the lungs and is important in the breathing process is the
A. alveoli 
B. asthma 
C. bronchi 
D. diaphragm 

3. The exchange of carbon dioxide and oxygen takes place in the 
A. alveoli 
B. asthma 
C. bronchi 
D. diaphragm 

4. ____ is a substance in tobacco products that causes stained teeth and skin 
A. nicotine 
B. carbon monoxide 
C. tar 
D. menthol 
5. ____ is a substance in tobacco smoke that reduces the blood's ability to carry oxygen 
a. tar 
b. nicotine 
c. asthma 
d. carbon monoxide