LIVINGTHINGS
BIOTIC
NONLIVINGTHINGS
ECOSYSTEM
AQUATIC
TERRESTRIAL
ABIOTIC
NATURAL
ARTIFICIAL
FOREST
DESERT
SAVANNAH
A
R
T
I
F
I
C
I
A
L
W
E
B
C
S
M
W
N
Z
I
O
O
X
H
T
Z
E
I
G
B
D
W
J
A
E
C
D
H
U
U
D
T
N
T
I
A
E
F
L
T
E
A
H
E
O
O
I
S
E
O
I
T
S
C
I
U
L
A
O
I
H
U
A
R
T
N
E
I
E
U
V
R
X
B
T
X
A
V
R
I
D
Q
U
E
R
E
I
A
G
O
O
I
A
E
C
Y
B
R
X
J
T
C
N
L
A
H
F
N
S
V
X
V
M
W
T
Y
I
O
G
W
D
R
N
T
G
E
H
M
P
U
V
N
E
S
T
V
W
A
R
F
H
X
I
G
I
J
X
X
O
Y
H
X
H
I
X
E
O
I
L
U
B
V
E
J
M
S
I
O
A
O
I
L
N
L
L
F
O
R
E
S
T
T
N
L
R
T
O
A
Q
U
A
T
I
C
I
E
O
E
G
O
N
T
E
I
P
G
A
K
Q
T
R
N
R
M
S
