The
bodies
of
vertebrates
have
a
____________________
,
a
trunk
and
____________________
.
Many
vertebrates
also
have
a
____________________
.
Fish
and
reptiles
have
____________________
all
over
their
bodies
.
Amphibians
have
bare
____________________
.
Birds
have
____________________
and
mammals
have
____________________
or
____________________
.
Birds
breathe
using
their
____________________
.
Fish
breathe
using
their
____________________
.
____________________
grow
inside
the
mother's
womb
.
Fish
grow
inside
an
____________________
.
