Final answer:
In Nami's plant investigation, the amount of light is the independent variable affecting plant growth. Temperature, water, soil type, plant species, and light exposure duration are controlled variables.
Explanation:
The independent variable in Nami's investigation is the amount of light the plants receive from the grow light on a timer.
The dependent variable is the plant growth, which is influenced by the amount of light the plants receive.
The controlled variables could include factors such as temperature, water, soil type, plant species, and duration of light exposure to ensure accurate results.
Learn more about plant investigation variables here:
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