When a person smokes a cigarette, he or she inhales ____ chemicals and toxic substances.
a. 7,000
b. 5,000
c. 2,500
d. 6,000
1 answer
a. 7,000
a. 7,000
b. 5,000
c. 2,500
d. 6,000
1 answer
1 answer
1 answer
1 answer
1 answer