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).
Share. The Battle of Gettysburg was fought from 1st to 3rd July 1863, in Pennsylvania. The battle resulted the largest number of casualties in any battle of the entire war, and was the turning point of the American Civil War. Over three days General George Meadeâs Army of the Potomac defeated the Confederate army of General Robert E. Leeâs, ending Confederate attempts to invade the North.