Question

a student tests whether fertilizer increases tomato production. which are constants? tomato production water soil fertilizer light

Explanation:

In an experiment testing if fertilizer increases tomato production, the amount of water, type of soil, and amount of light should be kept the same (constants) to accurately determine the effect of the fertilizer. Tomato production is the dependent variable and fertilizer is the independent variable being tested.

Answer:

Water, Soil, Light