method to prevent slope erosion?

Question

how to stop soil erosion on the steep hill.

Answer 1

Slopes are very much prone to soil ersion. some ways to prevent it are:
1) Animals shluld notbe allowed to feed on the grass in sloppy areas because their legs makes the soli porous and it'll be easily erosed.
2) Stairs should be made in the fields for farming. because while irrigation soil easily flows with water which leds to soil erosion.
3) Crop rotation must be applied on to the fields.
4) Fields should not left open. some or the other crop must be available on the field.
5) Deforestation should be stopped, aforestation must be enhanced.

Answer 2

grow plants.even grass can stop soil erosion on a steep hill.
the steepness can be reduced by making steps on the steep hill and planting plants in the steps.

Answer 3

Railroad tie walls to hold the soil back or silt fences

Answer 4

Vegetation.

Answer 5

Plant plants.