Air
pollution
is
a
major
environmental
risk
to
____________________
.
If
not
reduced
,
it
can
lead
to
serious
health
problems
such
as
stroke
,
heart
disease
,
lung
cancer
and
other
____________________
problems
.
According
to
____________________
____________________
____________________
,
around
7
million
____________________
are
due
to
exposure
from
both
outdoor
and
____________________
air
pollution
.
It
was
estimated
that
countries
from
the
Southeast
Asia
and
____________________
____________________
Regions
are
most
likely
to
be
affected
with
over
____________________
million
deaths
.
