A. a drug that increases the action of the central nervous system
b. a thick, sticky, dark fluid produced when tobacco burns
c. thickened white, leathery-looking spots on the inside of the
mouth that can develop into oral cancer
d. the addictive drug found in tobacco leaves
e. a cancer-causing substance
1. nicotine 2.stimulant 3. carcinogen. 4. tar. 5.leukoplakia

a is 3 b is 4 c is 5 d is 1 e is 2

Explanation:

Nicotine is addictive, which it is hard for people to quit. Leokoplakia is caused by smoking. Tar can sometimes be found on roads because of so much.

a is 3 b is 4 c is 5 d is 1 e is 2

Explanation:

experience :)

i don't think so because different teachers have different materials. tehy teach differently, unless you know for sure your teacher is the exact same as others. i would just contact ur teacher