Waec 2001 Agricultural Science Past QuestionsQuestion 11:The physical factor affecting crop production is A. Man B. Temperature C. Micro-organisms D. Vegetation Question 12:The most active agent of physical weathering of rocks in arid regions is A. Ice B. Water C. Wind D. Animals Question 13:The chemical weathering that is responsible for changing haematite to limestone is A. Hydration B. Solution C. Oxidation D. Hydrolysis Question 14:Liming is used to correct soil's A. Neutrality B. Acidity C. Cation exchange capacity D. Porosity Question 15:A vertical section through the soil is referred to as soil A. Profile B. Horizon C. Structure D. Texture |
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