Lake Tahoe is already very polluted, and each year a huge number of metric tons of phosphorus and nitrogen are introduced to the lake. The addition of these gasses into the water promotes so much algae growth that each year we loose another foot of clarity of the water. Natural cycles that used to prevent this, such as summer forest fires, have of course been stamped out by humans and the ecosystem no longer functions as it should. Scientists estimate that we have about a decade or two before it is too late to do anything at all to save Lake Tahoe. This will bring devastation to the region as the tourism industry will shrivel… interestingly enough, that same industry is of course one major source of the pollution in the lake.
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