Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
24th November 2025
- 1Inheritance, Variation and Evolution
Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 2DNA, Genetics and Inheritance
Define homozygous.
- 3Variation, Evolution and Selection
Define mutation.
- 4Ecology
Explain why deforestation to create land for cattle grazing can reduce biodiversity.
- 5Ecosystems, Adaptation and Feeding Relationships
In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
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