Question

You want to see which type of fertilizer helps plants grow fastest, so you add a different brand of fertilizer to each plant and see how tall they grow. Give 1 controlled variable

Answer 1

Answer:

Fish emulsion, on the whole, is the best fertilizer one can use. It is full of nitrogen and other nutrients plants require to grow faster and healthier.

Answer 2

Answer:

One controlled variable in this experiment is the amount of sunlight received by each plant.

Explanation:

• A controlled variable is a variable that is kept constant during an experiment or scientific research.
• This experiment is related to determining the best fertilizer which can help plants grow faster, so the controlled variables involved in this experiment would be the amount of sunlight received by each plant, the type of the plant used in this experiment, temperature, amount of water provided to each plant, etc.