Question

Tom wanted to test his hypothesis that plants grow better at room temperature than in cold temperatures. He placed an ivy plant in the refrigerator, which had no light source. He also placed a spider plant in the window in his room. What were Tom's variables?

Answer 1

The answer is the refrigerator and window.

Answer 2

The variables are temperature, light, and the kind of plant.

Step-by-step explanation:

The temperature is a variable because one plant is in the refrigerator and one is at room temperature. The light is a variable because the room has light coming from the window, but the refrigerator does not have a light. The kind of plant is also a variable because two different plants were used.