Question

question 14
1 pts
which of the following is an example when an uncontrolled experiment is best?
when testing the effect of sugar on a starch
when working with the human body
when testing the effect of water on a rock
when testing plant growth
question 15
1 pts
imagine your teacher asks you to design an experiment where you test the effect of temperature on the growth of a plant. you have 5 plants that you plant and place in different temperatures around the room. what would your variables be and what would your constants be

Explanation:

For Question 14, working with the human body often has ethical and complexity - related reasons that make uncontrolled experiments more common compared to the other options which can be more easily controlled. For Question 15, variables are factors that change in an experiment and constants are factors that stay the same. In the plant - temperature experiment, the independent variable is temperature as it is being manipulated, the dependent variable is plant growth as it is being measured. Constants could include the type of plant, amount of water, amount of light, type of soil etc.

Answer:

Question 14: When working with the human body
Question 15: Variables: Independent - temperature, Dependent - plant growth. Constants: type of plant, amount of water, amount of light, type of soil etc.