Mammals
are
born
from
their
mother´s
____________________
.
Baby
mammals
drink
their
mother´s
____________________
.
Mammals
are
covered
with
____________________
.
Birds
are
born
from
____________________
.
Reptiles
are
____________________
from
eggs
.
Reptiles
are
covered
with
____________________
.
Birds
have
two
____________________
and
they
are
covered
with
____________________
.