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.
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I think the correct answer from the choices listed above is option D. It is the balance that is directly used to make measurements. Fume hood is used as a place where preparation of solutions that are harmful is done. Eye wash station is used when a chemical is being spilled to the eye. The bunsen burner is used to heat substances.
Your answers are:
1. diploid
2. two times