posted by Cassie .
7) The dumping of large amounts of raw sewage into rivers or lakes typically leads to massive fish kills, although sewage itself is not toxic to fish. Similar fish kills also occur in shallow lakes that become covered in ice during the winter. What kills the fish? How might you reduce the fish mortality after raw sewage is accidentally released into a small pond containing large bass?
Try some of the following links for information:
1. sewage = http://search.yahoo.com/search?fr=mcafee&p=what+kills+fish+with+raw+sewage+in+the+lake
2. frozen lake = http://search.yahoo.com/search?fr=mcafee&p=when+a+shallow+lake+is+frozen%2C+what+kills+the+fish