There is no theory yet to answer the question.
Gravity and magnetism are not inventions, they are natural phenomena.
Gravity, magnetism, and electrostatic.
'Gravictism'? (Formed from Gravity, Friction and Magnetism)
Not magnetism, gravity.
Gravity. Magnetism is a fairly short-range force, but gravity goes on forever.
GRAVITY!
No.
No.
no it is not because gravity brings things down to earth and magnetism can push things up.
gravity
Magnetism and Gravity.
nope