Question

1. students investigate how fertilizer affects plant height. they use three identical pots with the same soil, plant species, sunlight, and water. each receives a different amount of fertilizer. which statements are correct? (choose 2)

a. the amount of fertilizer is the independent variable
b. the type of plant is the independent variable
c. the amount of sunlight is the dependent variable
d. plant height is the dependent variable

Explanation:

• In an experiment, the independent variable is what is changed or manipulated. Here, the amount of fertilizer is what the students are changing to see its effect.
• The dependent variable is what is measured as a result. Plant height is what is being measured to see how it is affected by the fertilizer (the independent variable).

Answer:

A. The amount of fertilizer is the independent variable, D. Plant height is the dependent variable.