Many
factors
can
affect
____________________
:
people
are
____________________
or
____________________
and
people
____________________
around
to
find
____________________
or
escape
natural
____________________
and
____________________
.
The
____________________
____________________
is
the
____________________
number
of
children
per
family
.
The
fertility
rate
in
Europe
is
about
1
.
6
.
This
number
is
calculated
by
____________________
the
total
number
of
____________________
by
the
total
number
of
____________________
.
Natural
changes
in
population
can
happen
when
there
are
more
births
in
a
country
than
deaths
.
This
results
in
an
____________________
in
population
.
If
there
are
more
deaths
than
births
,
population
____________________
.
____________________
is
the
movement
of
people
from
one
____________________
to
another
.
People
that
live
and
work
in
one
____________________
,
but
are
from
another
country
,
are
called
____________________
.
People
that
leave
their
country
to
live
in
a
different
one
are
called
____________________
.
When
there
are
more
inmigrants
than
emigrants
,
population
____________________
.
If
the
number
of
emigrants
is
____________________
than
the
number
of
inmigrants
population
decreases
.
