Question

4. Select the odd one out giving reasons.
(a) Top soil, subsoil, humus, parent rock
(b) Sand, clay, silt, humus
(C) Deforestation, floods, terrace farming, overgrazing​

Answer 1

Answer:

a. humus because it is not soil humus is organic matter when they decompose called humus

Answer 2

Answer:

humus is odd one because it is an organic matter.

humus is odd one because all others are types of soil whreas humus is a organic matter.

terrace farming is odd one because all others are factors responsible for soil erosion whreas terrace farming is one of the solution for soil erosion.