1. The functions of the respiratory system are... (there are two answers)

A. To pump blood to the 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. diaghragm***

3. The exchange of Carbon dioxide and oxygen takes place in the...
A. Alveoli***
B. asthma
C. Bronchi
D. Diaghtagm

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

The last 2 I got confused with. Plz help!

5 answers

I think 4. is C and 5. is D? Not sure though
All of your answers are right. :-)
Your correct I'm just putting it in a list lol
1.B,C
2.D
3.A
4.C
5.D
This is right just so you know
Ur mom is 100% Correct. Appreciate it!
Ur mom is correct for connuxus