Question

question 1 4 pts jordan investigates two plant fertilizers. he has three identical plants growing in the same kind of soil and pots. he adds one of the fertilizers to the first plant and adds the other fertilizer to the second plant. he uses the third plant as a control group. why was a control group used in this experiment? the replace one of the plants if it dies to have one plant growing under varying conditions to determine whether either fertilizer had any effect to demonstrate the effect on a plant that receives both fertilizers

Explanation:

In an experiment, a control group is used as a baseline. By comparing the plants with fertilizers to the control plant (which has no added fertilizer), it becomes possible to see if the fertilizers have any effect on plant growth.

Answer:

C. to determine whether either fertilizer had any effect