The core of Earth is made out of iron and nickel. The outer core's temperature is so hot that it melts the metal. The inner core is solid metal. What causes these differences? A. The outer core is is 2,2,300 300 km thick.
B. The inner core is kept solid by the intense pressure of all of the layers above it.
C. The inner core has a cooler temperature, allowing the metal to remain solid.
D. The inner core is made of a different metal.

Select the correct answer from the each drop-down menu. the idea of total war existed in all countries involved in world war i. for example, countries usedto determine howmuch food, rubber, gasoline, and other items each citizen could use during the war. in order to draft more soldiers into the military, many of the nations established a policy of mandatory. some countries also controlled public opinion during the warusingto prevent discouraging news from reaching the public. resetnext