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GCSE Combined Science · key term
Preserved remains or traces of an organism that lived in the past.
Used by AQA and Edexcel
Specification 4.6.3.1, 4.6.3.2 · Paper 2
Preserved remains or traces of an organism that lived in the distant past.
Revise: Evidence for EvolutionThree connected lines of evidence help explain why: genetic inheritance, the fossil record and the evolution of antibiotic resistance in bacteria.
The preserved remains or traces of an organism from millions of years ago, found in rocks.
Paper 1, Paper 2
Revise: Evidence for Human EvolutionFossils and stone tools help scientists reconstruct changes that took place over millions of years.
When describing evidence, explain what it shows: fossils reveal changes in organisms over time, while antibiotic resistance shows natural selection occurring in bacterial populations.
For fossil formation, link the process to preservation: reduced decay, replacement by minerals, or a trace becoming fixed as sediment hardens.
Explain gaps in the early fossil record using both soft-bodied organisms leaving few traces and geological activity destroying traces that did form.
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