Laura performed an experiment to determine the effect of nitrogen-rich fertilizer on plants. The procedure she used in her
experiment is shown below
1. Select a plant for the project
2. Add 5 Tbsp nitrogen-rich fertilizer to the plants sol each week
3. Measure plant growth each week
4 Calculate the total growth at the end of a 6-month period
What is wrong with Laura's experiment?
A She did not use a second plant as a control
B. She did not measure the plants growth daily
She did not measure how much fertilizer she was giving the plant
D. She did not set a time it on how long she was going to continue fertilizing the plant