50SOIL TO SAND
People’s actions are causing healthysoil to lose its nutrients and turn intoloose, dry sand. This processis called desertification. Itis bad news for us and forthe environment.Deforestation
Trees are chopped down for fuel,to make things with, and to clearland for farming. If too many trees arechopped down without new ones beingplanted, this leaves bare soil with notree roots to hold the soil in place.Overgrazing
The main cause of desertificationis overgrazing. Too many animalsgrazing and trampling on plantscan lead to soils becoming bare.The wind then blows or the rainwashes the bare soil away.Halfofourrai
nfo
restshavebeenchoppeddown in t
h
el
a
stcent
ury.Only a few typesof plants can growin desertified land.Loose soil canbe washed orblown away.Wood is usedto make paper.Dry land has few plants,which many animalsneed to feed on.050-051_Desertification.indd 50 31/10/2019 14:05