Question

a student tests whether fertilizer increases tomato production. what is the independent variable?
fertilizer
tomato production
constant
a student tests whether fertilizer increases tomato production. what is the dependent variable?
fertilizer
tomato production
constant
a student tests whether fertilizer increases tomato production. which are constants?
tomato production
water
soil
fertilizer
light

Explanation:

In an experiment, the independent variable is what the experimenter changes or manipulates. Here, the student is changing the amount or presence of fertilizer, so fertilizer is the independent variable. The dependent variable is what is being measured as a result of the change in the independent variable. In this case, it's tomato production. Constants are factors that are kept the same throughout the experiment. Water, soil, and light are factors that should be kept consistent to accurately test the effect of fertilizer on tomato production.

Answer:

1. Fertilizer
2. Tomato Production
3. Water, Soil, Light