Question

5. Students in a science class want to design an investigation to determine if a fertilizer added to soil affects the height of a plant over time. Which items would the students need to complete this investigation?
A. ruler, calculator, plant, soil samples with different amounts of fertilizer
B. microscope, beaker, plant, soil samples with the same amount of fertilizer
C. computer, stopwatch, plant, soil samples with different amounts of fertilizer
D. tape measure, graph paper, plant, soil samples with the same amount of fertilizer

Answer 1

A is the answer. You would need soil with different amounts- including no amount- to determine how the fertilizer affects the plants
Since you are measuring the height a ruler would be a good idea as well.