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Evolution - Wikipedia
https://en.wikipedia.org/wiki/Evolution
WEBEvolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations.
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Evolution | Definition, History, Types, & Examples | Britannica
https://www.britannica.com/science/evolution-scientific-theory
WEBFeb 29, 2024 · 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.
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An introduction to evolution - Understanding Evolution
https://evolution.berkeley.edu/evolution-101/an-introduction-to-evolution/
WEBEvolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
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Human evolution | History, Stages, Timeline, Tree, Chart, & Facts
https://www.britannica.com/science/human-evolution
WEBFeb 18, 2024 · Human evolution, the process by which human beings developed on Earth from now-extinct primates. The only extant members of the human tribe, Hominini, belong to the species Homo sapiens. The exact nature of the evolutionary relationships between modern humans and their ancestors remains the subject of debate.
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Evidence for evolution (article) | Khan Academy
https://www.khanacademy.org/science/biology/her/evolution-and-natural-selection/a/lines-of-evidence-for-evolution
WEBBroadly speaking, evolution is a change in the genetic makeup (and often, the heritable features) of a population over time. Biologists sometimes define two types of evolution based on scale: Macroevolution, which refers to large-scale changes that occur over extended time periods, such as the formation of new species and groups.
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Biology - Evolution, Genetics, Species | Britannica
https://www.britannica.com/science/biology/Evolution
WEBThe study of the relationships of living things to each other and to their environment is known as ecology. Because these interrelationships are so important to the welfare of Earth and because they can be seriously disrupted by human activities, ecology has become an important branch of biology. Continuity.
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Introduction to evolution - Wikipedia
https://en.wikipedia.org/wiki/Introduction_to_evolution
WEBIn biology, evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms ' observable traits.
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evolution | Learn Science at Scitable - Nature
https://www.nature.com/scitable/definition/evolution-78/
WEBEvolution 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 environments and can result...
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Understanding Evolution – Your one-stop source for information on evolution
https://evolution.berkeley.edu/
WEBMar 8, 2024 · Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
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Theory of Evolution - Education | National Geographic Society
https://education.nationalgeographic.org/resource/theory-of-evolution/
WEBOct 19, 2023 · theory. noun. explanation that has not been proven as fact. 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 nineteenth century.
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