Daily Practice - GCSE Science
- 1Variation, Evolution and Selection
State what is meant by a selection pressure.
- 2Ecology
Give one example of a biotic factor that could affect a population of rabbits.
- 3Ecosystems, Adaptation and Feeding Relationships
A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 4Biodiversity, Cycles and Human Impact
A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
- 5Chemistry Required Practicals and Data Analysis
Name one way to make a rate of reaction experiment more valid rather than simply more precise.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of May 1997, including the monthly compilation PDF.