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- Fertile soils with great thickness of about 100m formed from deposition of dust from deserts.
o Dust from deserts is carried beyond to wet areas.
o It’s washed down by rain causing its deposition.
o It accumulates into layers.
o Deposition continues and the layers are compacted forming sedimentary rocks.
o The sedimentary rocks wither to form fertile soils which favour cultivation e.g. Temperate lands of Europe along Rhine valley from Sahara dusts and along Huang He valley in N. China from dust of Gobi desert.
Kavungya answered the question on May 3, 2019 at 14:00
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