ATMOSPHERICPOLLUTION
VOLCANICERUPTIONS
DESERTIFICATION
NOISEPOLLUTION
WATERPOLLUTION
DEFORESTATION
LANDPOLLUTION
ERTHQUAKES
COLDSNAPS
DROUGHTS
EROSION
FLOODS
I
O
V
W
Y
O
K
K
U
Z
Z
F
L
O
O
D
S
U
G
O
Y
R
O
H
C
O
L
D
S
N
A
P
S
L
T
I
U
A
P
Y
E
D
W
C
H
R
E
K
D
O
Y
N
N
L
W
M
P
S
G
S
A
Q
R
A
D
A
I
X
K
P
E
D
K
R
V
A
J
C
U
J
A
N
R
E
E
Q
V
T
E
N
U
E
Q
O
S
S
E
N
O
R
J
F
Z
O
U
L
S
O
D
M
W
O
Z
A
K
R
R
W
U
D
K
Z
T
E
K
I
O
N
M
O
S
O
W
I
N
M
W
E
W
B
A
P
I
A
S
Y
E
T
X
O
F
O
Z
S
A
T
P
N
W
N
D
O
R
O
P
L
E
S
J
P
Z
I
R
H
O
P
J
U
X
O
E
U
C
B
F
L
E
O
K
W
H
U
S
S
H
A
Q
H
X
L
D
I
U
I
K
A
I
L
O
B
A
I
O
R
D
O
G
E
E
E
H
L
R
S
I
T
B
H
C
U
D
H
U
E
I
E
W
R
W
V
U
R
I
O
O
E
F
A
Z
Q
M
T
H
R
Q
R
I
C
T
E
Q
J
W
I
H
P
U
P
X
E
D
X
U
I
T
C
H
D
U
I
Q
A
Z
A
I
C
X
R
G
O
U
S
J
I
A
O
K
U
T
V
Y
N
A
H
A
O
D
P
F
E
H
L
C
D
Y
Z
D
N
U
I
R
I
O
A
N
F
I
D
E
O
I
T
T
L
R
V
P
Y
U
N
C
R
E
S
A
C
E
I
E
A
U
L
B
A
S
U
B
B
U
Q
F
G
O
I
B
Y
U
L
F
O
I
T
N
L
V
W
Z
T
K
E
I
E
R
N
Z
L
O
H
U
O
U
Y
U
G
E
U
H
R
E
I
C
A
W
E
U
U
F
A
P
P
E
V
D
O
G
O
I
T
J
H
N
O
Y
A
D
E
F
O
R
E
S
T
A
T
I
O
N
J
V
I
L
Y
I
N
O
T
D
E
S
E
R
T
I
F
I
C
A
T
I
O
N
O
J
E
E
O
K
U
H
Z
I
E
I
U
V
I
H
I
T
U
R
D
E
N
