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  1. Evolution - Wikipedia

    Evolution is the change in the heritable characteristics of biological populations over successive generations. [1][2] It occurs when evolutionary processes such as natural selection and …

  2. Evolution | Definition, History, Types, & Examples | Britannica

    Jul 11, 2025 · evolution, theory in biology postulating that the various types of plants, animals, and other living things on Earth have their origin in other preexisting types and that the …

  3. Theory of Evolution - National Geographic Society

    Oct 19, 2023 · The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the …

  4. An introduction to evolution

    Evolution helps us to understand the living world around us, as well as its history. Biological evolution is not simply a matter of change over time.

  5. EVOLUTION Definition & Meaning - Merriam-Webster

    especially : a process of constant change from a lower or simple state to a higher or complex state : growth. : something evolved. : the process by which new species or populations of …

  6. Evolution – Definition, Types, Advantages, Examples

    Nov 13, 2024 · Evolution is the process by which species change over time through the gradual accumulation of genetic variations, driven by mechanisms like natural selection, genetic drift, …

  7. evolution | Learn Science at Scitable - Nature

    Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing...

  8. What is evolution? | Definition of evolution - YourGenome

    In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all …

  9. A Brief Explanation of Evolution - ThoughtCo

    Jul 13, 2019 · Evolution means that species change over time, mainly through natural selection. Charles Darwin's book explained how the fittest traits survive and lead to new species. While …

  10. How Evolution Works - HowStuffWorks

    Evolution is a set of principles that tries to explain how life, in all its various forms, appeared on Earth. The theory of evolution succeeds in explaining why we see bacteria and mosquitoes …