River with a Problem

Agrega una trama en tu idiomaWater pollution film, using the Ottawa River as an example of what happens when a river is used as a dumping place for municipal and industrial waste. Color animation illustrates exactly wha... Leer todoWater pollution film, using the Ottawa River as an example of what happens when a river is used as a dumping place for municipal and industrial waste. Color animation illustrates exactly what happens to river water as it becomes polluted.Water pollution film, using the Ottawa River as an example of what happens when a river is used as a dumping place for municipal and industrial waste. Color animation illustrates exactly what happens to river water as it becomes polluted.