<span><span><span>The crust: low density silicate rock, 5-70 km thick. There are two distinct types of crust.<span><span>Continental crust is variable in thickness and composition. Thickness ranges from 5-70 km. The composition ranges from mafic to felsic.</span><span>Oceanic crust is uniform in thickness and composition. It is 5-6 km thick and is mafic in composition.</span><span>The differences in thickness and density between continental and oceanic are responsible for the existence of ocean basins due to isostatic balance as the crust floats on the more dense mantle.</span></span></span><span>The mantle: high density, ultramafic silicate rock which can flow when subjected to long duration stresses. The mantle is over 2900 km thick and makes up over 80% of the volume of the Earth. The mantle is not molten!</span></span><span>The core: iron and nickel, liquid outer region with a solid center. The core is just over half the diameter of the Earth.</span></span>
The Bill of Rights is the historical document that upholds these important principles.
Chronological thinking<span> is at the heart of historical reasoning. Without a strong sense of </span>chronology<span>--of when events occurred and in what temporal order--it is impossible for students to examine relationships among those events or to explain historical causality.
So I would think C</span>
The delivery of essential services to key constituencies.
the Italian peninsula was a politically fragmented conglomeration of states. This was the case when the United States announced its independence from Great Britain in 1776. When war broke out between Austria and the Revolutionary French Government in 1792, the French invaded the Italian peninsula, consolidated many of the Italian states, and established them as republics. In 1799 the Austrian and Russian armies pushed the French out of the Italian peninsula, which led to the demise of the fledgling republics.
After Napoleon’s rise to power,
