Placer mining causes environmental damage chiefly by

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Placer mining can cause all of the listed damages. Mining operations can destroy streambed habitats by physically altering the waterway and surrounding landscape. Excavation, dredging, and hydraulic mining can clog streams with sediment and silt, which can smother aquatic life and alter water quality. Additionally, mining activities can introduce toxic compounds to streams, such as mercury, which can have harmful effects on wildlife and humans.

Placer Mining Causes Environmental Damage Chiefly by