Question

1. sally wants to test how the type of light affects the height of bean plants. she uses three different types of light bulbs: led, incandescent, and cfl. she exposes the plants to the lights for the same amount of time each day. she also plants the seeds in containers that are the same size, with the same type of soil, and she waters them with the same amount of water each day. she measures the height of the plants using a ruler and records the growth each day. which of the following is/are control(s) in the experiment? (choose all that apply) the height of the plant the type of light the type of plant the amount of light

Explanation:

In an experiment, controls are factors that are kept constant to isolate the effect of the independent variable (type of light in this case). The type of plant is kept the same (bean plants), and the amount of light exposure time is the same for all plants. The height of the plant is the dependent variable, and the type of light is the independent variable.

Answer:

the type of plant, the amount of light