The appropriate answer is a. the temperature is high enough but pressure low enough to melt iron. The earth's core is composed of two layers; the inner and outer core. Both layers are composed mainly of iron and nickel. The main difference between the two layers is that the inner core is solid and the outer core is liquid. The inner core is solid because of the pressure created by the overlaying layers; the outer core, mantle and the crust. The inner core is however hotter than the outer core.
Because a magnet with north and south with another magnet with north and south can pull or push each other. same way with continental drift.
Indeed it was. So, yes, it's true.
B. To aid Eastern European countries. Since they were all war-torn in the 1920-1940, they all agreed that the country that damages the other must pay their debts that they created with war violence.
When silicon atoms bond, then silicates form which are minerals in which such elements as potassium, calcium, magnesium and aluminum combine with the silicon atoms to form minerals like feldspars of different types or if it is just silicon and oxygen that bond then it forms quartz.
