___________11. Farmers tend to clear and burn a patch of forest area. They cultivate the area until such time that the soil is no longer good for planting. ___________12. Forest or brush have been carelessly cut or burned on sloping land, the rain sweeps down the slope in a sheet and gradually washes away the soil. ___________13. One of the most powerful natural force that washes away the topsoil in agricultural land. ___________14. Large ice formations that move slowly and form valleys and shape mountains through erosion ___________15. A powerful natural force that causes significant erosion in dry areas. It usually picks dust and sand particles from the land surface and carries them to a large distance before settling. ___________16. It carries away more rocks and soil than all other agents. ___________17. It exhausts the fertility of the land by continuous cultivation of crops. ___________18. Plants are exposed to intensive grazing of animals making the soil bare. ___________19-20. What two agents or natural forces cause this rock formation to look like this?

paki sagutan pls need ko ngayong araw sama mga mabait diyan​