A student is studying the effect of fertilizer on fruit growth. He uses 6 tomato plants, placing each in a garden where they get equal amounts of sun and water. One plant is given no fertilizer, while the other 5 plants are given 5, 10, 15, 20, and 25 grams of dissolved fertilizer each day for 3 weeks. At the end of the experiment the tomato fruits are weighed.
What is the dependent variable in this experiment?
(1 point)
Responses
amount of water
amount of water
amount of fertilizer
amount of fertilizer
sun exposure
sun exposure
fruit weight