Which of these following methods is the most suitable for disposal of nuclear waste?
(1) Shoot the waste into space
(2) Bury the waste under Antarctic ice-cover
(3) Dump the waste within rocks under deep ocean
(4) Bury the waste within rocks deep below the Earth's surface
(1) Shoot the waste into space
(2) Bury the waste under Antarctic ice-cover
(3) Dump the waste within rocks under deep ocean
(4) Bury the waste within rocks deep below the Earth's surface