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  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory. Download This Image
  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.
  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.
  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.
  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.
  • Alan I. Leshner Quote - Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.
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Evolution is an organizing principle and when we call it a theory, we mean it’s a theory.