1
ECOSYSTEM
2
BIOSPHERE
3
BIOTIC
4
ABIOTIC
5
HABITAT
6
POPULATION
7
COMMUNITY
8
PHOTOSYNTHESIS
9
RESPIRATION
10
INTERACT
11
FACTORS
12
INDIVIDUAL
13
SPECIES
14
SHELTER
15
FOOD
16
WATER
17
CLIMATE
18
OXYGEN
19
CARBONDIOXIDE
20
CARBOHYDRATES
G
P
H
O
T
O
S
Y
N
T
H
E
S
I
S
U
E
D
S
E
U
F
E
W
A
B
N
C
X
Z
P
U
D
B
H
A
A
S
I
L
I
O
I
D
A
E
O
K
I
C
E
E
F
A
J
O
I
T
O
A
T
G
P
T
X
I
L
U
H
E
S
T
O
O
K
T
A
O
U
C
O
D
T
C
D
P
A
I
F
E
A
R
T
E
L
I
I
O
E
C
H
R
B
C
I
S
T
P
I
V
A
S
D
U
R
E
I
A
L
O
S
S
C
I
B
Y
T
R
N
P
R
P
X
I
I
Q
C
D
O
S
A
R
I
E
O
E
S
E
M
L
C
N
Z
T
D
A
H
F
O
T
B
E
W
A
U
I
U
E
O
X
Y
G
E
N
N
A
R
K
T
I
Q
M
T
C
A
R
E
T
N
I
U
W
A
E
U
S
E
T
A
R
D
Y
H
O
B
R
A
C
C
E
C
I
T
O
I
B
C
O
M
M
U
N
I
T
Y