____________________
growth
is
the
difference
between
the
number
of
people
who
are
born
(
____________________
____________________
)
and
the
number
of
people
who
die
(
____________________
)
in
a
place
during
a
year
.
The
natural
____________________
of
Spain
is
positive
due
to
the
decrease
in
____________________
due
to
improved
nutrition
and
improvements
in
____________________
and
hygiene
.
____________________
are
____________________
movements
that
imply
a
change
of
residence
.
They
are
produced
by
____________________
and
social
causes
.
Currently
in
____________________
there
is
more
immigration
than
emigratio
n
