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Overview: This news brief, from June 2007, explains how biologists are using evolutionary theory to protect the biodiversity that exists today and that may evolve tomorrow. Author/Source: UC Museum of Paleontology Grade level: 9-12 Time: 15 minutes Teaching tips: This article includes a set of discussion and extension questions, as well as links to related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles in your classroom. Concepts: Rates of extinction vary. Speciation is the splitting of one ancestral lineage into two or more descendent lineages. Occupying new environments can provide new selection pressures and new opportunities, leading to speciation. Scientists use multiple research methods (experiments, observational research, comparative research, and modeling) to collect data. As with other scientific disciplines, evolutionary biology has applications that factor into everyday life. Teacher background: Relevance

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