Which of the following forest trees is a soft wood?

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The natural grasslands of West Africa are generally located in the

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An area of land where fruit trees are cultivated is commonly called

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The most appropriate farm machinery for breaking soil is the

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The windmill is normally used as a source of power in

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Which of the following tools is the best for making seed beds?

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Which of the following factors will cause etiolation in crops?

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A soil with low PH value can be improved by the addition of

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Which of the following is not an effect of manuring on the soil?

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The removal of excess water from the soil surface and the upper subsoil is known as

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Chlorosis observed along the veins of leaves is a characteristic symptom for the deficiency of

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Which of the following is not an advantage of drip-irrigation?

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