Is it true that A-horizon or topsoil is the uppermost layer of soil?

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True

False

answer is A.

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Detailed Solution

The above statement is true.
The upper surface of the soil is known as the A-horizon or topsoil.
Horizons are the name for the layers of the soil. The A horizon, sometimes known as "topsoil," is the top layer of the mineral soil horizons. Sand, silt, clay, and humus, or decomposed organic material, make up the topsoil layer. Rich, heavily decomposed organic material known as humus is generated mainly from dead plants, crunched-up leaves, dead insects, and twigs.

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