the number of which darkly shaded area correctly identifies the location of northern european plain a1 b2 c3 d4

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !

It turns into vapor and goes into the atmosphere