Explica la diferencia entre:
Electrón excitado
Electrón estacionario

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

i guess because there isn't enough love going around. < 3