Rating Newest Oldest. Best Answer: Control variable is something is an experiment that doesn't change. It is not what is being tested. It is used to validate results. For example, you want to test if plants grow better in red of blue light.ou need to give each plant the same amount of water at the same time and need to keep the temperature constant. You change the color of light. Your control variables are: amount of water, time of water, and temperature because they are always the same.
Aftermath at Gettysburg and the American Civil War. The Battle of Gettysburg changed the lives of not only the soldiers, but also Gettysburgâs residents. The Battle of Gettysburg resulted in 51,000 casualties (killed, wounded, captured and missing).
The Civil War lasted from 1861-1865 and resulted in the deaths of more than 620,000 union and confederate soldiers. Each of the battles on this list resulted in more than 19,000 casualties including those who were either killed or wounded by the fighting. Three Confederate prisoners taken at the Battle of Gettysburg, July, 1863. Courtesy of Library of Congress, Prints & Photographs Division, LC-B8171-2288 DLC.