The fertilized egg must have enough cytoplasm to be able to divide repeatedly into the first few dozen cells of the embryo.
I believe this would be the ribosomes <span />
The original rock<span> is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes.</span>
<span>The region of Poland has suffered from the few limits of European states with respect to the international politics of the 20th century. The variations of the borders of Poland is due to the absence of natural barriers in the east-west. The extension of the border is the cause of constant changes in stability that have shaken the country and the inhabitants.</span>