Daily Practice

GCSE Science

15th October 1990

5 questions · GCSE · 584 questions in this band

1
Ecosystems, Adaptation and Feeding Relationships
Explain why a pyramid of biomass is never wider at the top than at the bottom.
2
Biodiversity, Cycles and Human Impact
Name the biological process that removes carbon dioxide from the atmosphere and converts it into carbon compounds in a plant.
3
Chemistry Required Practicals and Data Analysis
A gas syringe collects 48 cubic centimetres of gas in 40 seconds. Calculate the mean rate.
4
Atomic Structure and the Periodic Table
Explain, in terms of electrons, why reactivity decreases going down Group 7.
5
Using Resources
Name the four stages usually considered in a life cycle assessment of a product.

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