These trees are all close together and this picture was found on the north side of Illiniwick Road in Forsyth. The trees grow here because of the easy access to water.
The growth in this picture is random, in no specific order. They are around their resource, which is the water. The picture was found in the Grand Canyon. There is not as much life because it is a desert. This is a density dependent factor.
This is a uniform pattern because they were planted in rows and in a specific order. It is a vineyard. This picture was found in Napa Valley. The density independent factor for this is that they were purposely planted like that and kept exactly where the people want them to be.