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Handout
University of California

Ucmp: Evolution: Theory and Science

For Students 9th - 10th
An introduction to Darwin's theory of evolution with hyperlinks to other topics on evolution, including a timeline of evolutionary thought.
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eBook
CK-12 Foundation

Ck 12: Life Science: 4.10 Tracing Evolution

For Students 9th - 10th
See how scientists trace species through their evolutionary relationships.