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- The process of evolution
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evolution
scientific theory
Also known as: descent
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Science & Tech
- Related Topics:
- human evolution
- Ordovician radiation
- adaptation
- extinction
- coevolution
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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 distinguishable differences are due to modifications in successive generations. The theory of evolution is one of the fundamental keystones of modern biological theory. The diversity of the living world is staggering. More than 2 million existing species of organisms have been named and described; many more remain to be discovered—from 10 million to 30 million, according to some estimates. What is impressive is not just the numbers but also the incredible heterogeneity ...(100 of 39215 words)