Power
stations
,
cars
and
factories
produce
carbon
dioxide
(
CO2
)
,
Trees
and
plants
change
it
back
to
oxygen
,
but
we
a
.
____________________
____________________
down
trees
in
the
Amazon
rainforest
,
so
the
amount
of
carbon
dioxide
in
the
air
b
.
____________________
____________________
.
The
carbon
dioxide
allows
radiation
from
the
sun
to
enter
the
atmosphere
but
not
to
leave
it
.
This
c
.
____________________
____________________
the
atmosphere
to
heat
up
.
Scientists
think
that
the
polar
ice
caps
and
glaciers
around
the
world
d
.
____________________
____________________
.
This
is
creating
more
water
and
the
level
of
the
sea
e
.
____________________
____________________
.
In
many
parts
of
the
world
there
is
a
possibility
of
floods
on
land
near
the
coast
.
In
general
,
the
world's
climate
f
.
____________________
____________________
.
This
means
warm
areas
g
.
____________________
____________________
colder
winters
,
and
previously
cold
areas
h
.
____________________
____________________
warmer
.
