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 total number of American soldiers who have died on the battlefield in wars is somewhere around 660,000 (most of these deaths came during WWII, WWI, and the Civil War). The total number of people who have died in these wars (including disease, etc.) breaks down something like this:o give you an example, in World War II, about 300,000 Americans died on the battlefield, about 15 million soldiers worldwide died on the battlefield, but about 58 million people died in total, including soldiers and civilians.