What caused land degradation in Punjab?
(A) Intensive cultivation
(B) Over irrigation
(C) Deforestation
(D) Overgrazing

41 Which factor cannot be classified, as one of the factors of soil formation?
(A) Parent rock
(B) Running water
(C) Humus
(D) Industrialisation 42 Which type of resources is iron-ore?
(A) Renewable
(B) Flow
(C) Biotic
(D) Non-renewable 44 Where is terrace cultivation practiced?
(A) Punjab
(B) Haryana
(C) Plains of Uttar Pradesh
(D) Uttaranchal 45 Where is Sukhomaijri located ?
(A) Uttaranchal
(B) Uttar Pradesh
(C) Haryana
(D) Andhra Pradesh