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RE: ADSactly Education - Mississippi River Geology and Flow
the river is the important things to our life, so we have to keep it clean, right?
the river is the important things to our life, so we have to keep it clean, right?
This one could be kept cleaner in a lot of places. The flow is so large that a lot of the casual pollution seems relatively harmless, but it is cumulative. It will cause permanent harm.