Biology 9700/52 March 2022 | Cambridge AS Level Past Papers With Mark Scheme
- Investigation of light intensity effects on photosynthesis in Egeria densa.
- Control variables for experimental consistency.
- Methodology for measuring gas production in photosynthesis.
- Paper chromatography for pigment separation and Rf value calculation.
- Analysis of biodiversity impact from invasive species, specifically saltcedar trees.
- Simpson’s index of diversity calculation for rodent populations in different habitats.

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