Adaptation is where on living organism has to adapt to there surroundings. This squirrel in this picture is an example of adaptation to the environment.  It is an example of adaptation because the squirrel use the tree, on the left of the picture, for survival.  The tree gives the squirrel food because it grows acorns.  In addition, it gives the squirrel a home because the trees has branches and holes that the squirrel could live in.  Also, the tree gives the squirrel protection because the tree is very high.  Therefore, when ever the squirrel sights a predator it could run up the tree for protection.  This tree plays a big part for squirrel survival. 

THIS PICTURE WAS TOOK BY: WHITEKNIGHT83

In the Ecology world these trees are a biotic limiting factor.  A biotic limiting factor is a living, growing feature that limits the population in the ecosystem.  These trees limits the sunlight that plants and grass needs to grow.  However, these trees also provide a source of shelter and food to living animals.  For example, birds and squirrels get acorns from these trees.  In addition, birds make their nest in these trees. This is why trees are biotic limiting factors in the ecology world.

This picture was took by WhiteKnight83