Question

The soil near the surface is usually darker than about one meter down, this is because the top soil
(a) Is richer in Ca and Mg
(b) Contains more organic matter
(c) Is wetter than the sub soil
(d) Is drier than the sub soil

Answer 1

The soil near the surface is usually darker than about one meter down, this is because the top soil

(a) Is richer in Ca and Mg

(b) Contains more organic matter✔✔✔

(c) Is wetter than the sub soil

(d) Is drier than the sub soil

Answer:- Contains more organic matter

Answer 2

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(a) Is richer in Ca and Mg

(b) Contains more organic matter. ✔✔

(c) Is wetter than the sub soil

(d) Is drier than the sub soil