we went near the boys house and there is a spot where erosion took place. in 2010 the students placed branches and they planted seeds (grass seeds) for new grass to grow. this year some of the seeds grew and the grass are tall at this stage. there is spots where the seeds did not grow.

in 2011 we used branches to cover the ground so that the animals don't walk on that ground to see if the grass will grow.

CAUSES OF SOIL EROSION
Wind and water are the main agents of soil erosion. The amount of soil they can carry away is influenced by two related factors:

* speed - the faster either moves, the more soil it can erode;

Plants provide protective cover on the land and prevent soil erosion for the following reasons:

* plants slow down water as it flows over the land (runoff) and this allows much of the rain to soak into the ground;

* plant roots hold the soil in position and prevent it from being washed away;

* plants break the impact of a raindrop before it hits the soil, thus reducing its ability to erode;

* plants in wetlands and on the banks of rivers are of particular importance as they slow down the flow of the water and their roots bind the soil, thus preventing erosion.

The loss of protective vegetation through deforestation over-grazing, ploughing, and fire makes soil vulnerable to being swept away by wind and water. In addition, over-cultivation and compaction cause the soil to lose its structure and cohesion and it becomes more easily eroded. Erosion will remove the top-soil first. Once this nutrient-rich layer of soil is gone, few plants will grow in the soil again. Without soil and plants the land becomes desert-like and unable to support life - this process is called desertification. It is very difficult and often impossible to restore desertified land.