A. Inorganic fertilizers
B. Bio-origin fertilizers
C. Green manuring
D. All of the above
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The correct answer to the question: "Inorganic of mineral origin are:" is "Bio-origin fertilizers".
A. Inorganic fertilizers
B. Bio-origin fertilizers
C. Green manuring
D. All of the above
The correct answer to the question: "Inorganic of mineral origin are:" is "Bio-origin fertilizers".
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