watershed and ocean ecosystems

negative affects

  1. shipwrecks

  2. overfishing

  3. oil spills

  4. pollution

  5. sediment disposition

positve affects

  1. shipwrecks can create coastal reefs (can crash and dump oil or can dump resources that are on cargo ships).
  2. laws saying you can only catch a certain amount of fish ( can make fish numbers decrease).
  3. oil spills can provide jobs for cleanup crews ( allow people to have more jobs that they can or can not do).
  4. microelements can be positive for pollution (some land can use microelements like some farms).
  5. most important factor affecting the settlement (can take some sediments from lakes, valley's).
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