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The Importance of Understanding Evolution The majority of evidence for evolution comes from the observation of organisms in their environment. Scientists also use laboratory experiments to test theories about evolution. Positive changes, like those that aid a person in the fight to survive, will increase their frequency over time. This is referred to as natural selection. Natural Selection The concept of natural selection is a key element to evolutionary biology, however it is also a key aspect of science education. Numerous studies have shown th
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