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