Monday, March 28, 2005


Mosses and lichens are used as pollution indicators. Mosses and lichens are non-vascular (no system of veins to transport materials around the plant), so they rely heavily on moisture in the air. Because of this, they are highly sensitive to air pollution, and these plants are rarely found or are completely absent in heavily polluted areas. If you've got a bunch of moss in your backyard, that's actually a good sign.

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