Theory of evolution (biology only)
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What evolution means

What evolution means

Flow diagram showing variation in bird beaks, drought as a selection pressure, survival, reproduction, inheritance, and larger beaks becoming more common over generations Evolution is a change in the inherited characteristics of a population over many generations. A single organism can grow, heal, or change behaviour, but that is not evolution.

Theory of evolution (biology only) Lesson

  1. GCSE
  2. /Biology
  3. /Theory of evolution (biology only)