B. a control group because it can be used as a reference
In this type of experimental investigation, a control group is necessary to provide a baseline for comparison to the other temperature conditions being tested. This helps to ensure that any observed effects are due to the temperature changes and not other factors.
Jeremy is setting up an experiment in his garage on Elodea (an aquatic plant). He plans to test different temperature conditions. What will this type of experimental investigation MOST likely include?
A. a control group because the variables are changed
B. a control group because it can be used as a reference
C. a standard group because the variables are changed
D. a standard group because it can be used as a reference
1 answer