Question

a student decides to set up an experiment to see if detergent affects the growth of seeds. he sets up 10 seed pots. -5 of the seed pots will receive a small amount of detergent and will be placed in the sun. -5 of the seed pots will not receive detergent and will be placed in the shade. -all 10 seed pots get the same amount of water, number of seeds, and type of seeds. they are grown for 2 months. what is one thing wrong with this experiment set - up? more than one variable is being tested at the same time there is no way to measure the outcome there are too many plants in each group the plants receive the same amount of water

Explanation:

In a proper experiment, only one variable should be changed at a time to accurately determine its effect. Here, both the presence of detergent and the amount of sunlight (sun vs shade) are different between the two groups, making it impossible to tell if any observed differences in seed - growth are due to detergent or sunlight.

Answer:

More than one variable is being tested at the same time