Friday, December 3, 2010
Wednesday, October 27, 2010
Symbiotic Relationships
Symbiotic relationships are relationships in which two different organisms live in close association with each other. The relationship between moss and a tree is commensalism. This is because the moss is not harming the tree and it isn't helping it either. As long as the tree can still receive the same items it needs to survive, moss can live there. Although, the habitat of which the moss is growing has to meet the needs of the organism. Thus making this area perfect for the moss to grow.
Friday, October 1, 2010
Biotic limiting factors.
This biotic limiting factor provides us with oxygen. It is also a wonderful home to birds and squirrels. Humans tend to cut down trees for many purposes. Such as paper, for schools or work. When Christmas comes, several trees are chopped down for us to take home and decorate. There are others reasons trees are considered biotic limiting factors.
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