Biology 9700/52 Oct Nov 2016 | Cambridge AS Level Past Papers With Mark Scheme
1. Investigating the effect of potassium chloride on stomatal opening, focusing on environmental factors like light and CO₂.
2. Serial dilution preparation to obtain various KCl concentrations for leaf strip tests.
3. Calculating mean stomatal aperture diameter over time, analyzing light intensity's influence on stomata.
4. Using chi-squared tests to evaluate the impact of herbicides on butterfly populations in unsprayed headlands.
5. Statistical interpretation of butterfly species data to assess significance and conservation strategies.

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