The concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists. Evolution by way of natural selection is most likely which type of concept?

Evolution by natural selection is a scientific theory: a broad explanation of biological patterns that has been tested and supported by extensive evidence. Repeated observations and experiments strengthen the explanation, but scientific theories are not simply facts that are true because they have always been observed. Choice A describes this kind of well-supported explanation.

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