Melanie recorded observations on the effect of two new fertilizers on the growth of plants. Three Identical plants to the first plant, 100 g of Peter A was added to the second plant, and 100 g of Fertilizers was added to the third plant. All other growing conditions of the plants were kept constant, which
step of the scientific method did Melanie do here? (1 point)
Drawing a conclusion
Testing with an experient
O Doing background research
Analyzing experimental data