____________________
is
a
process
through
which
we
obtain
____________________
from
____________________
.
Many
____________________
work
____________________
to
make
digestion
possible
.
Digestion
starts
in
the
____________________
where
____________________
cut
,
tear
,
and
grind
food
.
____________________
____________________
expel
saliva
and
our
____________________
mixes
them
.
This
mixture
is
called
____________________
.
We
swallow
the
____________________
into
the
____________________
,
goes
down
through
the
____________________
and
finally
to
the
____________________
.
