Question

mia wanted to find ways to save water. she learned that people can reuse greywater, which is water that has been used in sinks, tubs, and washing machines. she wondered if her plants would be less healthy if she watered them with greywater instead of tap water. mia placed eight potted petunia plants on her windowsill. for three months, she watered four of the plants with greywater and the other four with tap water. at the end of three months, she counted the number of dead leaves on each plant. in this experiment, which were part of an experimental group? the plants watered with tap water the plants watered with greywater

Explanation:

Mia did an experiment with petunia plants, some watered with greywater, some with tap - water. She counted dead leaves after three months.

Answer:

The plants watered with greywater and the plants watered with tap - water were both experimental groups.