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Unit 4: Change Over Time
Quick questions on Evidence for Evolution - TCE Biology (Tasmania)
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is fossil evidence?Show answer
Fossils are the preserved remains or traces of past organisms. Because fossils form in layers of sedimentary rock, deeper layers are generally older, allowing scientists to order them in time. The fossil record shows that life has changed over hundreds of millions of years, that many extinct species existed, and that simpler forms generally appear before more complex ones.
What is evaluating the evidence?Show answer
No single line of evidence proves evolution alone, but the strength of the case comes from many independent sources all pointing to the same conclusion. Fossils, anatomy, biogeography, embryology, and molecular data are consistent with each other, which is why evolution is accepted as the unifying theory of biology.
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