Question

A scientist wants to determine which fertilizer is more effective—Fertilizer X or Fertilizer Y.

The best way for her to proceed would be to design an experiment with
A.
three groups of plants—a group fertilized by X, a group fertilized by Y, and a control
group with no fertilizer.
B. two groups of plants—a group fertilized by X and a control group with no fertilizer.
C. two groups of plants—a group fertilized by Y and a control group with no fertilizer.

Answer 1

the answer is a, three groups of plants—a group fertilized by X, a group fertilized by Y, and a control group with no fertilizer

Step-by-step explanation:

i put this answer in and it was correct

Answer 2

The answer is A. Each fertilizer must be tested and the control group is used to see how the plant would normally grow.