Matching (20) Match items in column A to column B

Column a Column b
1.
A.
REM Sleep
2.
B.
Stimulants
3.
C.
Tolerance
4.
D.
Marijuana
5.
E.
Depressants
6.
F.
Jet Lag
7.
G.
Meditation
8.
H.
Sleep Apnea
9.
I.
Hallucinogens
10.
J.
Biofeedback
11.
K.
Francis Crick
12.
L.
Nathaniel Keitman
13.
M.
Narcolepsy
14.
N.
Physical Dependence
15.
O.
Insomnia
16.
P.
Hallucination
17.
Q.
Psychoactive Drug
18.
R.
Posthyprotic Suggestion
19.
S.
Daydreams
20.
T.
Circadian Rhythm