Question

A student wants to determine the effect of soil type on plant growth. He set up 3 pots as shown below. How could this experiment be improved?

All three pots should have the same kind of soil.

All three pots should have the same kind of seed, the same amount of light, and the same amount of water.

The three pots should have different amounts of water

There is nothing wrong with this experiment.

Answer 1

The second option to control the other variables

Answer 2

All three pots should have the same kind of seed, the same amount of light, and the same amount of water.

Step-by-step explanation:

the other options would make the experiment have other variables