Question

why mountain soil are rich in humus​

Answer 1

Answer:

hey dude here is your answer

Mountain soil is very rich because it contains very fertile and rich organic matter which makes it rich...

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Answer 2

Answer:

because there are less erosion factors (water, air, change of temperatures, pressure compare with Mountains) , most of the Valleys are crossed by rivers that supply enough water to make the plants grow.

hope it helps you.....✌✌