27Frozen solid
Farmers might leave fieldsunplanted over winter sothat crop diseases go away.Cold weather can freeze baresoils in place to stop thembeing carried away by wind.Snow can protectgrass from freezingtemperatures thatmight damage it.Weathered downstream
Soil taken away by weather iswashed into rivers and carriedout to sea. The soil that tookthousands of years to form islost forever.It t
akes50 0 y e a r s f o r 2.5cm(1in ) o f s o i l t o form.026-027_Sun_Wind_And_Rain.indd 27 31/10/2019 14:05