Quiz: In Glacier National Park, what is the seasonal phenomenon

Core Editors

August 11, 2025

In Glacier National Park, what is the seasonal phenomenon known as ‘glacial flour’ that can affect the lakes?

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A) A type of algae bloom that colors the water green

B) A process of ice melting that raises the water level

C) A fine sediment produced by glacial erosion that turns the water a milky turquoise

D) A seasonal migration of fish species that changes the water’s ecosystem