Based on its average density of 2970 kg/m3 compared with that of water at 1000 kg/m3, what is the internal structure of jupiter's moon europa thought to be

fertilization is the union of an egg and a sperm cell i believe.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.