scrie o scrisoare de razboi una realizata din perspectiva unui soldat in linia frontului si cealalta ca raspuns al unui membru al familiei ramas in spatele frontului

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 !