Answer:
B. Runoff from heavy rainfall forms narrow, shallow channels
Explanation:
The rill erosion occurs at places that are stripped of vegetation, or do not have it naturally. The area in which this erosion occurs also has to be at a certain angle, thus it has to be a slope. When a heavy rainfall occurs, it manages to create runoff. The runoff over-saturates parts of the soil, and starts moving it downwards. As it moves it downwards, narrow, shallow channels are being formed. The water runs through this streamlets, or headcuts, moving the soil down with it, thus causing an extensive erosion of the area.
Answer:
Erosion, compaction, nutrient imbalance, pollution, acidification, water logging, loss of soil biodiversity and increasing salinity have been affecting soil across the globe, reducing its ability to support plant life and so grow crops.
