Symbiosis.

Recently in class we have been studying symbiosis. There are three types of symbiotic relationships. The three types are commensalism, parasitism and mutualism. Commensalism is when only one species benefits while the other is not harmed. Parasitism is when one organism benefits, while the other is harmed. Mutualism is where both of the organisms benefit. An example of commensalism is regular ivy grown on a tree. An example of parasitism is poison ivy growing on a tree. An example of mutualism is when a bee takes pollen from a flower. This study is important to society because without things like parasitism the world might be overflowed with plants. Without mutualism we might have enough. Without symbiosis, there would be no cooperation, or or cooperation with any organisms on Earth.