Many people who go fishing know where good fishing spots are located. They also know that certain factors influence whether or not they will be successful at catching a lot of fish. Listed are a number of variables that influence fishing.
• The time of day
• The phases of the moon
• The type of bait
• The temperature of the water
Lisa decides to go fishing one morning. She wants to conduct an investigation while she is there. Which is a variable that can be manipulated?
