![]() There was some litter, primarily vodka bottles, as well. Algal mats alongside the river banks demonstrated river eutrophication, or when an overabundance of nutrients create algal blooms, which in turn strip the river of its oxygen and block sunlight from the river bottom. Cattle wandered around the flood plain, and we could see tufts of wool from sheep that had grazed recently. we made a stop at a bridge over the Tuul River to inspect it. By the time we reached the countryside, we could see a row of houses that had been constructed specifically for the heads of state who attended the Mongolia-hosted 2016 Asia-Europe Meeting. On our way, we passed out of the commercial downtown district of Ulaanbaatar, through the residential district with Soviet-built high-rise apartment buildings, and then into a commercial district with construction companies, scrap metal yards and light industry. On the second day of field trips before our Tuul River report card workshop, we headed downstream to visit two mines: one recently built with a history of environmental protections, the other an old soviet mine with no apparent environmental regulation.
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