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It is a theory because it is a comprehensive, well-supported model explaining a well-defined set of independently verifiable observations in an independently verifiable and falsifiable manner.

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11y ago

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In evolutionary Biology, a group of organisms share common descent if they have a common ancestor. There is strong quantitative support for the theory that all living organisms on Earth are descended from a common ancestor

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12y ago
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Technically it can't be proven, but remember gravity is still considered a theory in the world of physics.

Because the word "theory" doesn't mean the same thing in science as it does in general public. In science, theory is the strongest and the most rigid idea that is backed by mountain of evidence, facts, repeated experiments, and various laws/hypotheses. Things like the theory of evolution or the theory of tectonic plate are known to be the best explanation that science has to give. There is no such thing as a provable theory, so being a theory is the highest caliber of scientific idea. All theories can be completely rejected, but none can be fully accepted and proven. Those that have not been rejected have withstood the test of time to be the best explanation out there.

See related link below for more information regarding scientific theory.

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11y ago
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Because in this case especially ( but in all cases generally ) the theory of evolution by natural selection explains the fact of evolution by being a comprehensive explanation supported by many lines of converging evidence.

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14y ago
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It is considered a theory because it is substantiated by evidence. In the scientific sense, a theory is a proposition that is supported by evidence, either direct or indirect. With out some of observable evidence, it is only a hypothesis. Theories CAN be changed or proven false as new information is learned or as the INTERPRETATION of information is changed. Evolutionary theory can be said to be true, as the theory itself has evolved over time! :)

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13y ago
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It is referred to as a theory because there is evidence to support it, but not enough to bring about scientific consensus.

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13y ago
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*Apex

Because it is supported by scientific data

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Elisa Fierro

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1y ago
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B. It is backed up by scientific evidence. Apex

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melinda pack

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4y ago
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girlygamer

Lvl 1
3y ago
it is an explanation that is well supported by scientific evidence

it is backed up by scientific evidence.

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Wiki User

14y ago
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Q: How is evolution a theory?
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