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  • Understanding Evolution: The Driving Force of Species Change
    The theme that reflects the idea there has been a gradual change in characteristics of species over time is evolution.

    Here's why:

    * Evolution is the process of change in the heritable characteristics of biological populations over successive generations. This change is driven by various factors, including:

    * Natural selection: Organisms with traits better suited to their environment are more likely to survive and reproduce, passing on those advantageous traits.

    * Genetic drift: Random fluctuations in the frequency of genes within a population.

    * Mutations: Changes in DNA that can introduce new traits.

    The gradual accumulation of these changes over vast periods of time leads to the diversification of life and the emergence of new species.

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