Which of the following has had a significant effect on Washington’s geography over the last several million years? All that apply. Break up Pangea,dust storms,hurricanes,ice age,tornados,volcanoes

Answer 1

The options that have had a significant effect on Washington's geography over the last several million years are:

- Break up Pangea: The tectonic activity in the breakup of the supercontinent Pangea has influenced the formation of mountain ranges and the overall topography of Washington.
- Ice Age: Glacial activity during the ice age has shaped the landscape of Washington, carving out valleys, creating fjords, and depositing sediment.
- Volcanoes: The presence of volcanic activity, particularly in the Cascade Range, has impacted Washington's geography. Volcanic eruptions have created mountains, altered the flow of rivers, and deposited volcanic ash across the region.