Carbon
works
in
a
____________________
cycle
,
present
in
all
____________________
things
:
in
the
soil
,
in
the
oceans
,
in
the
atmosphere
and
in
rocks
____________________
underground
.
When
plants
and
other
living
things
die
,
much
of
their
stored
carbon
makes
its
way
back
to
the
atmosphere
until
new
plants
____________________
and
reabsorb
the
carbon
.
But
over
millions
of
years
,
some
of
the
carbon
stored
in
____________________
trees
and
sea
life
becomes
rock
and
some
becomes
____________________
____________________
:
coal
,
oil
and
natural
gas
.
Natural
events
like
____________________
____________________
release
some
of
the
carbon
trapped
in
rock
.
And
human
activities
,
like
burning
fossil
fuels
,
also
release
some
of
that
prehistoric
carbon
.
Today
,
____________________
release
around
60
times
more
carbon
than
all
the
volcanoes
on
the
planet
each
year
.
That
____________________
Earth's
carbon
cycle
and
____________________
____________________
in
the
atmosphere
and
oceans
.
Planting
more
trees
will
help
,
but
____________________
alone
can't
get
us
to
net
zero
.
There's
only
one
sure
way
to
stop
global
warming
.
We
must
stop
releasing
this
____________________
carbon
into
our
air
.
