A-horizon of the soil is also known as
A. Elluviated horizon
B. Illuviated horizon
C. Both A and B
D. Top soil
Answer: Option D
Solution(By Examveda Team)
The A horizon is the top layer of the mineral soil horizons, often referred to as ‘top soil’. This layer contains dark decomposed organic matter, which is called "humus." A horizon contains less clay or pedogenic oxides.The A is a surface horizon, which is the home for various microorganisms as well as earthworms, thus it is the zone in which most biological activity occurs.
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