Question

scenario #2
a student observes that petunias potted in terrafirm brand soil seem to grow better than ones planted in gardengro soil, even though the packaging for both soils says they contain the same things. she designs an experiment to see which soil the plants really do grow better in. she gets four petunias, and plants one in terrafirm soil, one in gardengro soil, one in a half - and - half mix, and leaves one in the soil it came in. she puts the plants in the same location in her house, so that they all get the same amount of sunlight, and gives them all identical quantities of water every day. after three weeks, she measures all the plants. the terrafirm plant is 3.5 inches tall, the gardengro plant is 3.0 inches tall, the mixed soil plant is 3.2 inches tall, and the plant in its original soil is 2.7 inches tall.

Explanation:

Step1: Identify the experiment setup

The student has four different soil - conditions for petunias: Terrafirm soil, Gardengro soil, half - and - half mix, and original soil, with controlled sunlight and water.

Step2: Analyze the growth results

We have the final heights of the plants: Terrafirm (3.5 inches), Gardengro (3.0 inches), mixed soil (3.2 inches), original soil (2.7 inches).

Step3: Draw conclusion

The petunia in Terrafirm soil has the greatest height among the four, indicating that, based on this experiment, petunias seem to grow better in Terrafirm soil.

Answer:

Based on the experiment, petunias seem to grow better in Terrafirm soil as the plant in Terrafirm soil had the greatest height (3.5 inches) compared to the others.