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Thursday, October 14, 2010

Parasitism

The picture to the left of this page is considered parasitism. Parasitism is when one organism lives on or in an organism, harming it. For example, if there is a tick on you, it will drink blood from your body. The tick benefits because it gets its food. However, you are harmed because it takes away some of your blood. In this case, it would be a parasite that ate part of a plant's leaves. We may not know what the parasite is, but we do know that fed on this plant. It benefited by getting food and energy. The plant is harmed because the parasite at some of the plants leaves and left it with a smaller amount of food.

Treasure, if you have post that I posted this today, I didn't, I just fixed something today.

Thursday, September 30, 2010

Biotic Limiting Factor

This a picture a biotic limiting factor. A biotic limiting factor is a living or once living thing that limits the population of certain organisms. This picture is tree that is right in my neighborhood. The tree limits the amount of plants that grows underneath the it. It does this by blocking most of the sun the plants underneath it gets. It also gets most of the water since it is a big plant.