Question

Xavier is testing different types of planting soil to determine which type is most effective in growing blueberry bushes. He purchases two different brands of planting soil from a local store. Xavier applies Brand A to an area of the yard that receives full sunlight and Brand B to another area of the yard that is in partial sunlight. He waters the area with Brand B daily; he waters the area with Brand A every other day. At the end of the study, Xavier concludes Brand A is more effective in growing blueberry bushes. Why is his conclusion not valid?

Answer 1

Xavier's conclusion is not valid because:
To correctly test the effectiveness of the plating soil, the amount of sunlight received and the consistency of the watering should be equal to ensure accurate results.

Answer 2

ohhhhh okay, that makes a lot of sense, thank you!(:

Answer 3

could you help with another? I got the answer but it seems like it needs more depth to is @Ares0706