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Control Variable

275 bytes added, 09:50, 20 August 2018
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===Examples===
{| class="wikitable"
|Investigation: Who is the fastest?
|Controls
|-
|[[File:RaceChildren.png|center|200px]]
|
*Everyone starts from the same starting line.
*Everyone finishes at the same point.
*Everyone wears the same kind of shoes.
*Everyone has to run on the grass.
|}
 
If you want to know how plants grow differently depending on the light, you should make sure they are all watered the same, have the same soil and are kept at the same temperature.