Key term for OCR GCSE Biology B, used in Interdependence in Ecosystems.
The average mass of the atoms of an element compared to 1/12th of the mass of a carbon-12 atom.
Relative Atomic Mass (Aᵣ) appears in OCR GCSE Biology B revision content for Ecosystems and Photosynthesis, especially Interdependence in Ecosystems and Percentage Mass Calculations.
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