Question

define soil profile
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Answer 1

Answer:

A soil horizon is a layer parallel to the soil surface, also the decaying matter on it, whose physical, chemical and biological characteristics differ from the layers above and beneath. Horizons are defined in many cases by obvious physical features, mainly colour and texture.

Answer 2

Answer:

There are several factors that affect the composition of soil . It's thickness , which is the basic property of soil , varies from a few centimetres to a few metres . Despite such variations soils have nearly identical vertical structure -

i e., it forms in horizontal layers . The uppermost layer of soil is known as the topsoil . It is the first layer with a lot of humus . Immediately below is the subsoil that consists of uneven coarse particles of rock are very little humus . Below the subsoil is the bedrock which is hard , solid and tightly bound rock . The different layers of soil together is known soil profile .

Explanation: