Crear
NITROGENOXIDES
STRATOSPHERE
OZONELAYER
CHEMICALS
OZONEHOLE
UVRAYS
GASES
CFCS
P
X
N
A
I
Q
B
H
O
U
E
C
R
I
W
K
Z
D
S
K
C
A
D
Z
X
N
X
C
F
C
S
E
I
J
E
B
C
R
J
A
N
E
S
B
A
L
E
Y
J
A
D
J
A
Q
P
A
Y
C
J
C
V
U
Q
O
F
Z
I
H
O
B
Q
A
A
D
U
I
Q
A
Z
G
X
E
X
X
V
U
K
O
U
V
R
A
Y
S
P
S
I
L
O
L
U
X
I
Q
L
T
M
C
R
V
A
R
U
O
N
S
T
R
A
T
O
S
P
H
E
R
E
I
U
H
E
J
K
E
M
X
T
L
W
G
Y
U
I
G
Y
E
G
K
A
V
L
A
L
Q
V
O
A
O
R
O
I
N
O
S
G
O
Q
N
Y
I
A
L
L
U
Q
A
U
O
R
E
X
I
E
E
U
M
G
A
E
O
I
U
N
Z
T
S
M
Y
B
C
O
M
X
D
N
U
K
H
B
O
I
A
Z
U
R
N
S
V
X
K
O
F
Y
K
O
E
N
G
H
U
E
F
W
E
Y
B
Z
G
G
O
Q
R
C
H
E
M
I
C
A
L
S
M
O
E
M
L
