Assuming investigation is required, the following results were found.
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Investigating what makes fruit go brown
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Interpreting an investigation of plant hormones
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Using a spirometer to investigate human lung function
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A closer look at blood
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Investigating the response of Calliphora larvae to light
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Comparing the flower structure of different angiosperms
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Nitrogen-fixing bacteria free-living in the soil
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Measuring respiratory quotient
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Using a choice chamber to investigate animal responses to stimuli
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Measuring reaction time of a human nerve-controlled reaction
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Nitrogen-fixing bacteria in root nodules of leguminous plants
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Identifying the conditions needed for photosynthesis
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Investigating enzymes used in laundry detergents
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How good is your toilet paper?
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Digestion of protein: microbes
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Microbes ate my homework
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Dissection of the ventilation system of a locust
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Brine date
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Investigating effect of concentration on the activity of trypsin
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Digestion of starch: microbes