USGS Multimedia Gallery for Audio Tag: vegetation http://gallery.usgs.gov/ en-us A list of the latest audio files and podcasts added to the U.S. Geological Survey's Multimedia Gallery (http://gallery.usgs.gov). http://gallery.usgs.gov/images/USGS.gif USGS http://gallery.usgs.gov/ <![CDATA[Why are some lakes I see full of algae and thick plants?]]> http://gallery.usgs.gov/audios/101 http://gallery.usgs.gov/audios/101 Tue, 4 Mar 2008 00:00:00 EDT vegetation 2008 Mar