What role does immigration play in modern Europe?

But primary immigration into Europe – driven by labour needs – all but ended with the oil crisis of 1973. ... and had nothing like the legal and social protection of today's welfare states. ... as safe, asylum-seekers who do not arrive by plane are likely to be rejected.

Explanation:

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.