Explanation:

 Factors affecting Water Erosion:

Water erosion is due to dispersive and transporting power of water. Factors affecting are:

1. Climatic factors:

This includes rainfall characteristics, atmospheric temperature and wind velocity

2. Soil characteristic:

This affect infiltration rate of soil, Infiltration rate depends upon permeability of soil, surface condition and presence of moisture in it.

3. Vegetation:

It creates the obstacle for raindrops as well as glowing runoff. A good vegetative cover completely reduces the effect of rainfall on soil erosion.

4. Topographic effect:

The land slope, length of slope and shape of slope are main factors which influences soil erosion. As slope of land increases from mild to steep, erosion increases.

Third statement is incorrect.