Sunday, November 1, 2009

Invasive Species

One issue that has always struck me is invasive species. There are many invasive species out there and the all have a huge impact on the environment. The biggest impact that the invasive species have on habitats is that they destroy food chains. For instance there was a fish that brought into the great lakes that literally started to kill fish. They would attach to the side of a fish and suck on it until the fish died. Another issue was the zebra mussels that were brought into areas through ballast water. With this problem the mussels started to destroy the bottom part of the food chain and then everything above the lower levels started to suffer. I believe that if people are going to succeed with their daily lives, fishermen for instance, they need to understand the importance of keeping the natural habitat. Invasive species kill the food webs and if habitats aren't kept the way they are, and fishermen are using rusty crayfish as bait, then types of fish and other organisms that live in the water will die. 

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