Assuming limit is required, the following results were found.
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Investigating anti-microbial action
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Monitoring the body’s reactions to stress
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A window on the past: Measuring stomatal density
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Testing leaves for starch: the technique
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Following gene transfer by conjugation in bacteria
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Dissecting lungs
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How do plants and animals change the environment around them?
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Looking at a heart
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Investigating transport systems in a flowering plant
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Measuring reaction time of a human nerve-controlled reaction
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Aseptic techniques
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Investigating the effects of biochar on soil fertility
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