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
Q
P
H
O
T
O
S
Y
N
T
H
E
S
I
S
V
E
X
S
A
S
F
Y
M
C
B
N
C
U
H
P
M
D
A
H
A
W
S
U
L
I
O
I
D
W
U
O
D
I
C
E
E
A
A
S
O
I
T
O
V
T
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P
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I
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I
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T
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O
Y
U
A
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U
P
A
I
F
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I
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T
E
L
I
I
O
E
P
H
R
B
C
Z
S
K
P
I
V
A
S
D
U
R
E
I
A
L
G
J
S
D
I
B
Y
T
R
N
D
R
P
H
I
L
N
U
D
P
S
A
O
I
E
O
E
S
O
M
O
R
N
L
T
V
P
H
W
O
T
B
E
B
A
F
I
R
E
O
X
Y
G
E
N
N
A
R
G
T
H
U
M
T
C
A
R
E
T
N
I
Z
W
A
E
U
S
E
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A
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D
Y
H
O
B
R
A
C
C
I
C
I
T
O
I
B
C
O
M
M
U
N
I
T
Y