lisa is also working on her own science fair project and wants to make sure her project is better than…

Brief Explanations:

To perform the experiment, Lisa could have several groups of plants. One group would be the control group, exposed to normal conditions with no radio - wave exposure. Other groups would be exposed to different intensities or frequencies of radio waves. She would need to keep other factors like sunlight, water, soil type, and temperature the same for all groups. The dependent variable is the plant growth (which could be measured by height, number of leaves, biomass etc.). The independent variable is the radio - wave exposure (intensity or frequency of radio waves).

Answer:

To perform the experiment: Have a control group with no radio - wave exposure and experimental groups with different radio - wave exposures, keeping other factors constant. Dependent variable: Plant growth. Independent variable: Radio - wave exposure.