INVERTIBRATE
ENVIRONMENT
OBSERVATION
HYPOTHESIS
VERTIBRATE
CONCLUSION
EXPERIMENT
ASTRONOMY
CHEMISTRY
ASTROLOGY
SCIENCE
PROBLEM
PHYSICS
GEOLOGY
BIOLOGY
O
C
X
T
O
B
S
E
R
V
A
T
I
O
N
O
E
Z
X
Q
K
V
D
I
Y
D
J
N
S
C
I
E
N
C
E
X
I
N
K
Q
T
P
P
O
Q
X
R
H
O
N
N
C
U
T
W
N
O
U
X
K
N
Z
E
J
S
B
U
A
O
O
H
F
J
G
V
L
C
K
B
D
E
Y
T
S
I
F
I
L
I
E
N
A
U
E
I
W
C
G
I
E
M
G
J
I
N
A
A
S
M
S
A
U
R
L
H
I
O
Q
U
A
I
O
E
A
Q
M
U
I
E
G
C
T
Y
K
U
S
U
Y
E
O
R
L
D
U
W
L
S
J
L
T
I
I
A
U
M
A
G
A
M
X
E
O
I
E
C
T
U
O
S
B
A
E
S
I
U
O
A
U
A
R
P
I
M
N
R
U
A
I
R
E
H
R
K
Y
L
U
S
C
T
N
X
B
O
Y
U
H
S
A
A
N
H
D
B
O
H
A
I
R
L
O
E
C
V
I
G
G
T
I
I
V
O
Y
E
I
W
P
T
H
K
H
O
N
I
U
O
E
R
U
P
I
I
G
P
M
T
N
P
O
E
U
A
H
O
C
R
P
O
B
K
R
K
I
X
O
A
R
B
O
S
T
P
I
Y
G
G
I
L
Q
V
O
O
O
X
A
T
Z
E
X
A
O
S
J
R
C
Q
Z
O
A
E
N
D
B
U
M
H
H
N
V
P
K
L
K
H
Z
E
M
G
S
M
M
G
K
L
J
I
H
E
T
X
G
I
W
V
A
W
Z
Y
V
U
E
R
H
A
E
P
E
E
S
H
Z
O
A
U
I
V
B
O
U
C
N
O
G
Q
O
M
O
U
G
I
E
A
B
E
Y
M
O
N
O
R
T
S
A
K
O
R
E
E
T
O
S
