What activity is cited as the source of the greatest damage caused by muskrats?

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Multiple Choice

What activity is cited as the source of the greatest damage caused by muskrats?

Explanation:
Muskrats cause the greatest damage through their burrowing into banks and embankments along streams, canals, and levees. Those tunnels undermine the stability of banks, weaken dikes and irrigation structures, and can lead to erosion, collapses, or flooding. While they feed on aquatic plants and may build vegetation lodges, the major economic and structural damage comes from the extensive burrow networks rather than feeding or swimming.

Muskrats cause the greatest damage through their burrowing into banks and embankments along streams, canals, and levees. Those tunnels undermine the stability of banks, weaken dikes and irrigation structures, and can lead to erosion, collapses, or flooding. While they feed on aquatic plants and may build vegetation lodges, the major economic and structural damage comes from the extensive burrow networks rather than feeding or swimming.

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