Daily Practice · GCSE Science

Daily Practice - GCSE Science

3rd November 1993

5 questions · GCSE · 584 questions in this band

1
Ecology
Give one example of an abiotic factor that could affect where a plant species grows.
2
Ecosystems, 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.
3
Biodiversity, Cycles and Human Impact
Explain why large-scale deforestation increases the concentration of carbon dioxide in the atmosphere.
4
Chemistry Required Practicals and Data Analysis
In the rate experiment where a cross disappears, why is the result subjective?
5
Atomic Structure and the Periodic Table
A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.

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