stuff was dumped in it.
The main cause of marine pollution are humans!!!
the main use of water in agriculture is irrigation of course. it can cause pollution by carring soluts like excess nitrogen or phosphorus to underground water reserves or lakes and rivers. it can also carry dissolved pesticides and herbisides though its less likely
Iowa Great Lakes
The main cause to the start of the great depression was the Wall Street Crash in 1929.
St. Lawrence River
St. Lawrence River
driving cars is the main i guess
The Leon River
The web address of the Dossin Great Lakes Museum is: http://detroithistorical.org/main/dossin/index.aspx
litering of course and the discharge of harmful substances
the main cause of water pollution in South Africa is by urbanisation, deforestation, damming of rivers, destruction of wetlands, industry, mining, agriculture, energy use, and accidental water pollution
The address of the Great Lakes Zoological Society is: 310 N Main Street, Chelsea, MI 48103-9592