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A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Empieza por  
A
Vertebrates that live on land but depend on water to complete their life cycle
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B
Type of fish that have a skeleton made up of bones
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C
Heterocercal fin of cartilaginous fish
Contiene la  
D
Larvae of amphibians
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E
Animals with a constant body temperature
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F
Limbs of fish
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G
Fish breathe through them
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H
Type of scales that cover the skin of reptiles
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I
Example of reptile
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J
Agnatha fish lack of it
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K
Example of marsupial
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L
Sense organ in fish
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M
Oviparous mammals
Contiene la  
N
Respiration through the skin
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O
It covers the gills
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P
mammals that are born at an advanced stage of their development
Contiene la  
Q
Order of reptiles
Contiene la  
R
Glands of mammals that produce milk for feeding babies after birth
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S
Type of reproduction in vertebrates
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T
Urodela have this but anura don't
Empieza por  
U
Salamanders belong to this order of amphibians
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V
Animals with a backbone or a spinal column
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W
Limbs of birds
Contiene la  
X
Bony fish have this type of fertilisation
Contiene la  
Y
Species of agnathans without teeth
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Z
Placental mammals with black and white stripes