<u>Answer:</u>
<em>The two primary factors that impact how a well of lava will eject are consistency and gas content. </em>
<u>Explanation:</u>
<em>Both are identified with the arrangement of the magma. </em>Hawaiian volcanoes will in general emit basalt , which is low in consistency and low in gas content (about 0.5 weight percent).
The higher the level of silica substance of magma, the more thick it is. <em>Since a magma with less silica substance is moderately liquid and has a high capacity to stream (low consistency)</em>
Answer: Appalachian Mountains, Rocky Mountains, Great Lakes, Lake Superior, Missisippi River, Great Plains, Silicon Valley, Atlantic Ocean, Pacific Ocean, Mount McKinley.
Explanation: Sir I'm pretty sure you could've just looked these up, but those are all the Geographic features I can think of,
It is in Mexico! :) Hope this helped
It changed so much because there were always European explorers heading out on voyages, for many reasons (like to trade with neighbouring countries, ferrying people from one land to the other, etc). During those voyages they found new lands, and so the maps had to be revised quite often because of these new discoveries.