Which factor cannot be classified, as one of the factors of soil formation?
(A) Parent rock
(B) Running water
(C) Humus
(D) Industrialisation

39 (C) Maharashtra, Karnataka, Kerala
(D) Bihar, Bengal, Assam  40 In which place is land degradation excess due to land mining?
(A) Punjab
(B) Haryana
(C) Uttar Pradesh
(D) Jharkhand 42 Which type of resources is iron-ore?
(A) Renewable
(B) Flow
(C) Biotic
(D) Non-renewable 43 What caused land degradation in Punjab?
(A) Intensive cultivation
(B) Over irrigation
(C) Deforestation
(D) Overgrazing