Biology A (Salters-Nuffield) A-Level
Control of variables
What Control of variables means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Control of variables
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Reference: Pearson Edexcel
Keeping other variables constant, such as light intensity or temperature, to obtain valid results when investigating a factor.
Topics that use Control of variables
- Topic 5: On the Wild Side (Pearson Edexcel A-Level)
Related terms
- Abiotic factors
- Abundance
- Allele frequency
- Allopatric speciation
- Anthropogenic causes of climate change
- ATP as universal energy currency
- Biomass units
- Biotic factors
Using Control of variables in the exam
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