Question

The upper layer of the soil is generally dark in colour because
(a) Crops grow in it
(b) Organisms live in it
(c) It is rich in humus and minerals
(d) it is a mixture of clay and
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Answer 1

(c) it is rich in humus and minerals

The uppermost layer of soil is usually darker in colour due to the presence of huge amount of organic matter. Organic matter is composed of roots, dead leaves, insects, small organisms and animals which eventually get degraded to form humus and make the soil fertile.

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Answer 2

Answer:

(c). it is rich in humus and minerals.

Explanation:

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