Question

q1. (s c.6.n.1.1)
a student designs an experiment to test how soil type affects plant growth. she uses three pots: one with sandy soil, one with clay soil, and one with garden soil. each pot gets the same type of seed, the same amount of water, and the same sunlight.
which part of the investigation is the independent variable?
the amount of sunlight
the amount of water
the type of seed
the type of soil

Explanation:

The independent variable is the factor that is changed or manipulated in an experiment. Here, the student is changing the type of soil to see its effect on plant growth while keeping other factors like sunlight, water, and seed - type constant.

Answer:

The type of soil