Question

Eddie is performing an experiment. He asked the question what type of soil makes plants grow the fastest. He has four plants. He gives Plant #1 with potting soil,Plant #2 with sand, Plant #3 with dirt from his yard, and Plant #4 with gravel. All of the plants are kept on the same shelf next to the window and receive the same amount of water. After 4 months, Plant #1 is 100 cm tall, Plant #2 & #3 are 115 cm tall, and Plant #4 is 12 cm tall.
What is the Manipulated Variable in this Experiment?

What is the Responding Variable?

Please help me!

Answer 1

Manipulated variable: the types of soil
Responding variable: how much t the plants grow