Assuming variation is required, the following results were found.
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Recording variation in ivy leaves
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Observing the effects of exercise on the human body
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Quantitative food test: protein content of powdered milk
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Making Reebops: a model for meiosis
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Cloning a living organism
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Controlling body mass
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Investigating the effect of pH on amylase activity
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Changes in earthworm responsiveness
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Topics
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Investigating the effect of concentration of blackcurrant squash on osmosis in chipped potatoes
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A simple model for natural selection
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Observing patterns in the distribution of a simple plant
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Investigating how we see colour
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Investigating factors affecting the heart rate of Daphnia
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Investigating the effect of temperature on plant cell membranes
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Comparing the flower structure of different angiosperms
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Transpiration in plants
of stomata according to their environmental conditions. Measuring stomatal density provides a tool for investigating this variation. Experiments
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Evolution
Practicals focussed on the elements of natural selection – variation, competition, inheritance, population growth – will help to explore the principles of the theory of evolution. Experiment collections
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