Combined Science GCSE
Timescale of life
What Timescale of life means in Combined Science GCSE, as defined for AQA.
Definition of Timescale of life
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Reference: AQA
Simple life forms developed more than three billion years ago, and the process is gradual and cumulative over very long time periods.
Topics that use Timescale of life
- Evolution (AQA GCSE)
Related terms
- Common ancestry
- Evolution
- Formation of new species
- Mutation and genetic variation
- Natural selection
- Speciation and reproductive isolation
- variation
- Allele frequency change
Using Timescale of life in the exam
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