Question

the generalized soil profile below shows a soil with four horizons. which of the following soil horizons contains the highest concentration of organic matter? choose 1 answer: a a b b c c o o

Explanation:

Organic matter is mainly found near the surface where plant - litter decomposition occurs. The O horizon is the top - most layer consisting of organic material like decomposed leaves, twigs etc. It has the highest concentration of organic matter among the soil horizons shown.

Answer:

D. O