To determine which statement about the high school students' investigation into the effect of different types of fertilizers on the growth of tomato plants is correct, we would typically look for statements that reflect sound scientific methodology, including elements such as controlled variables, independent and dependent variables, and proper experimental design.
Here are some potential correct statements that could apply to their investigation:
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The type of fertilizer used is the independent variable. This is the factor that the students are changing in their experiment to observe its effect on plant growth.
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The growth of the tomato plants is the dependent variable. This is the outcome that the students are measuring to determine the effect of the different fertilizers.
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Controlled variables (or constants) should be maintained. These could include factors such as the amount of water, sunlight, soil type, and environmental conditions that should remain consistent throughout the experiment.
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Replicates should be used. To ensure the reliability of their results, the students should use multiple plants for each type of fertilizer to account for variability in plant growth.
Without knowing the specific statements you are comparing, any of these kinds of statements regarding the structure and execution of their investigation would be considered correct. If you have specific options to choose from, please provide them for a more targeted response.
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