Extinction and Appearance
Middle School Science · Flashcards · Application
MIDDLE SCHOOL SCIENCE · FLASHCARDS
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QUESTION
Choose the best inference: A new species appears immediately after a mass extinction layer.
QUESTION
Identify the species with the latest last appearance: A LAD 9, B LAD 4, C LAD 6.
QUESTION
Identify the most likely conclusion: Fossil species X is in layers 3–7 only.
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ANSWER
Species X appeared by layer 3 and went extinct after layer 7. FAD at layer 3, LAD at layer 7 shows species' time range.
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