Source
:
the
____________________
point
of
the
river
.
Upper
course
:
the
inicial
stage
of
the
river
in
the
____________________
.
The
water
flows
____________________
and
____________________
rocks
with
it
.
Middle
course
:
where
the
river
flows
more
____________________
through
landscapes
that
are
less
____________________
,
forming
a
____________________
plain
.
Lower
course
:
in
this
____________________
stage
the
river
flows
slowly
and
deposits
the
rocks
that
it
has
____________________
along
with
it
and
forms
curves
calles
____________________
.
The
mouth
:
at
the
final
stage
the
water
carried
by
the
river
flows
into
another
river
,
a
____________________
or
the
____________________
.
At
this
point
any
remaining
____________________
are
deposited
.
