Question

"Write about the horizon A of the soil profile "

Answer 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 technical definition of an A horizon may vary between the systems, but it is most commonly described in terms relative to deeper layers.

Explanation:

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Answer 2

Answer:

"Horizon A is the top most layer. It contains soluble materials and organic material (humus) from decayed plants and animals. These are needed for the growth of plants. Leaching is common in this layer"