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GCSE Biology · key term
Processes that change or destroy rocks, such as tectonic movement, heat, pressure, erosion and weathering.
Used by AQA
Specification 4.6.3.5 · Paper 2
Revise: FossilsThe earliest evidence is sparse, especially because early organisms were soft-bodied and much ancient rock has been changed or destroyed by geological activity. This is uncertainty caused by incomplete evidence, not evidence that scientific investigation is impossible. Interpretations can be revised when new fossils or other evidence are discovered.
Do not state that all dead organisms become fossils. Fossilisation is uncommon because decay, scavenging and geological activity can remove the evidence.
Explain an incomplete fossil record using both biological and geological reasons: many early organisms were soft-bodied, and geological activity destroyed many traces that did form.
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