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Investigate the effects of four variables - nitrogen, temperature, light intensity and light duration - on the growth of tomatoes. Run experiments in a plant research laboratory. Consider the results and write up your observations and conclusions.
At Greenwood Senior High School, Hannah, a graduate teacher, sets her students the task of measuring the dependent variable in a science experiment. The experiment measures the motion and energy of an object in a virtual environment, where the user modifies the independent variable (ie the nature of the object, or the environment). ...