The
three
fossil
fuels
are
____________________
,
____________________
(
petrol
,
diesel
,
jet
fuel
)
and
____________________
____________________
.
They
are
called
____________________
fuels
because
they
are
formed
beneath
the
ground
over
millions
of
____________________
.
They
contain
stored
____________________
energy
which
is
released
by
____________________
.
