AEPA Biology (NT305) Practice Questions - Arizona Educator Proficiency Assessments Biology (NT305) Subject Knowledge Test Exam

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A biology teacher asks students whether soil pH affects radish seed germination. In a controlled experiment, which variable should students deliberately change?

The number of seeds placed in each dish The temperature of the growth chamber The pH of the soil or growth medium The percentage of seeds that germinate

Correct Answer:

The pH of the soil or growth medium

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