Question

There is a lot more to a good experiment than just test tubes and chemicals--consider how these "unknown" factors may influence the results.

Answer 1

In a laboratory experiment studying plant growth, factors such as different fertilizers, sunlight, water, temperature, and soil nutrients should be considered and controlled.

Step-by-step explanation:

In a laboratory experiment studying plant growth, there are several factors that might be involved. The experiment could involve testing the effects of different fertilizers on plant growth, where some plants receive fertilizer and others do not. Other factors that might affect plant growth and should be controlled in the experiment include sunlight, water, temperature, and soil nutrients.