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Download Chapter 17 Plate Tectonics Notes
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Transcript
EVIDENCE ⢠Ancient climates â Wegener also found evidence of similar climates on different continents. ⢠Glacial till â deposits of glacial sediment on continents that are now in tropical climates. Also, rocks scratched by glaciers. ⢠Evidence that North America had tropical swamps. We know that North America does not have tropical swamps now.
