As electrons move from the higher to the lower energy level, they release energy and occurs. question 8 options: excitation ground state emission quantum state

As electrons move from the higher to the lower energy level, they release energy and GROUND STATE occur.
There are many energy levels in atoms of elements and electrons can move from one level to another level and the lowest level possible is called the ground state. An electron needs energy to move from the ground state to an higher energy level. When an electron gains energy, it becomes excited and acquire the capacity to move to an higher level. When an electron in an higher energy level loses energy, it falls back to the ground state. 

Cramming you staying up all night to get a lot of work done for a class and is very stressful

They are both used to view parts of the cell