Question

What did the forest prevent

Answer 1

Forests are rich in vegetation. Herbs, shrubs and trees in the forests hold the top most layer firmly by their roots. This does not allow natural forces like wind and water to carry away the top most fertile layer of the soil easily. Hence, forests prevent soil erosion

Answer 2

Forests prevent soil erosion.
Herbs, shrubs and trees in the forests hold the top most layer firmly by their roots. This doesnot allow natural forces like wind and water to carry away the top most fertile layer of the soil easily. Hence, forests prevent soil erosion.