Science, asked by Namankothari14, 1 month ago

explain the horizontal soil and detail​

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Answered by whitelinez1994
1

Answer:

The A horizon is the top layer of the mineral soil horizons, often referred to as 'topsoil'. This layer contains dark decomposed organic matter, which is called "humus". ... The A is a surface horizon, and as such is also known as the zone in which most biological activity occurs.

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