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A scientist conducted an experiment to investigate the effects of different light intensities on the growth of tomato plants. The scientist set up three groups of tomato plants: Group A received low light intensity, Group B received moderate light intensity, and Group C received high light intensity. The height of the tomato plants was measured every week for a month.

Which of the following variables is the independent variable in this experiment?

A. Height of the tomato plants
B. Light intensity
C. Time (weeks)
D. Growth of tomato plants

Sagot :

GinnyAnswer

Final answer:

In this experiment, the independent variable is light intensity, the dependent variable is the height of the tomato plants, and time (weeks) is a controlled variable.


Explanation:

The independent variable in this experiment is the light intensity given to the tomato plants, as it is the factor being deliberately changed and manipulated by the scientist. The dependent variable would be the height of the tomato plants, as it is the outcome that is being measured in response to the changes in light intensities. Time (weeks) would be considered a controlled variable in this experiment, as it remains constant while the light intensity varies.


Learn more about independent variable, dependent variable, controlled variable

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