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Nitrate is a naturally occurring form of nitrogen that is commonly found throughout the environment. It is present at low levels in most groundwaters, but can be present significantly higher levels in areas with extensive use of fertilizers, storage and spreading of manure or...

How do fish kills happen? Fish kills can occur for natural reasons. Under certain circumstances, large numbers of fish can die from natural causes. For example, every spring smelts and gaspereaux enter Island rivers to spawn and during this process some fish will die from natural...