HSC Investigating Science Practice Questions - HSC Investigating Science (NSW Higher School Certificate, Year 12) Exam

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In a controlled experiment testing the effect of fertilizer concentration on plant growth, which variable represents the independent variable?

The measured height of the plants after four weeks The concentration of fertilizer applied to each group of plants The amount of water and sunlight provided daily to all plants The species of plant used in the experiment

Correct Answer:

The concentration of fertilizer applied to each group of plants

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