Erosion


 * What is erosion?

Erosion is the process in which the surface of the earth gets worn down. The key to erosion is called "fluid flow." Water, air, and ice are all fluids because they tend to flow from one place to another.[1] "Erosion is weathering which means the breakdown of natural things like mountains, hills, etc".[2]** One thing that causes erosion is over-grazing. Over-grazing is when cattle or livestock grazes too much in a certain area. Grazing is good for killing invasive plant species, but when they graze too much, many plants will be eaten. A concern for erosion comes from cattle (cows) on farms. Some owners have been fined already for over-grazing. What I think may be killing some fish, would be the over-grazing of cattle. A nasty fact about these farm creatures, is that in the ranch, they are squeezed into steel grids, where they sit and lie in their own waste, which could contaminate the soil, plus each pen holds 150 cows!!! [3]

erosion

 

By my observations this is a tree that has experianced some erotion. [3] [6] One thing that causes erosion is over-grazing. Over-grazing is when cattle or livestock grazes too much in a certain area. Grazing is good for killing invasive plant species, but when they graze too much, many plants will be eaten. A concern for erosion comes from cattle (cows) on farms. Some owners have been fined already for over-grazing. What is killing some fish, would be the over-grazing of cattle. A nasty fact about these farm creatures, is that in the ranch, they are squeezed into steel grids, where they sit and lie in their own waste, which could contaminate the soil, plus each pen holds 150 cows!!! Now isn't that interesting?


 * __References__

[1] Brockman, Audrey. http://teacher.scholastic.com/dirt/erosion/whateros.htm. 19,Nov, 2008

[2] Brockman, Audrey. http://www.buzzle.com/articles/erosion-control.html. 19, Nov, 2008

[3] Haumesser, Emma 20, Nov., 2008 [4] Lyon,Madeleine Envionmental News Network March 29,1999. 20,Nov, 2008**