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