Which of the following was not a technological first during the Civil War? use railroads to move troops and to keep them supplied.
New and improved medical techniques
Armor-plated steamships
Photography

folds are formed when heat and pressure is applied to the rock. the higher the temperature, the more pliable rocks become. folds are more likely to occur when the deformation caused by the compression is applied slowly. faults are defined as the displacement of rock that were once connected along a fault line.

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food chain i would say only because there is competition on getting food and survival

battle of the bulge, but are there any multiple choice options?