The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
The correct term is fission.
I think so because most people have a decent life although they may complain about some things in it.
A psychologist would say that she enjoys the game because it acts as a reward for her. When she wins or is good at a game this means she is receiving different signals which act in a rewarding way towards her.
