Monday, November 17, 2008

Class Response: What is Symbiois


<-a picture of mutualism

Symbiois is a close relationship between two organisms in which one organism lives near, on or even aside another organism, and the organisms benefit. This happens everywhere and all the time. There are three types of of symbiotic relationships. One type is commensalism, this is when one of the organisms benefit and the other is not harmed. An example of commensalism is when there barnacles on a whale. The barnacles have a place to grow and the whales don't seem to mind. The second is mutualism, that is when both organisms benefit from each other. Mutualism would be a clown fish and an anemone. The clown fish would get safety and have shelter; meanwhile the fish will attract others the anemone which it can feed of. Parasitism is when one organism gains while the other gets harmed. a pine tree and a woodpecker would be an example of parasitism because the woodpecker will get food from the tree. However, the tree will suffer from diseases and will weaken. Symbiotic relationships are important to life in my opinion and we can can notice multiple relationships while just out on a walk.


http://www.poliz.de/starship/sciencenew/symbiois.htm

The Unfortunate Truth


Seven innocent whale have gone missing! Scientists presume that they are dead. This took place by the Seattle area in the US. this been a huge thing for the marine life. This has been the greatest loss of orcas in the last ten years. The marine biologist have turned on the alarm. They also believe there are explanations. One explanation they believe is the loss of food, this year it has been harder for the orcas to find salmon. However, there could also be the possibilities that pollution has been apart of this. Also, naval ships. There was a baby killer whale, Luna and she was once following a tugboat near the Vancouver Islands and was unfortunately killed by the boats propeller. This is one of the many of the sad stories of the unfortunate deaths of many whales. Whales have been an endangered species since 2005. I think that the the seven went out looking for food and since there's a decrease in salmon they went out farther to look for food. However, they could've got lost on their way back.