1. The problem statement, all variables and given/known data What exactly is the relative problem of extra accumilation of metals such as iron magnese and lead in fish? Do these metals cause problem with fish develoupment and fertility or do they effect the humans or animals that eat them? 2. Relevant equations N/A 3. The attempt at a solution My research has turned up nothing usefull, I have only found facts,figures, and staticstics on how much actual metal pollution is being done.