1. Write the three main raw materials used for the production of organic fertilizers (3 marks)? A. __ B. __ C. __ 2. List at least 4 different practices that can help to protect against soil erosion and __

1. The three main raw materials used for the production of organic fertilizers are:<br /> A. Animal manure<br /> B. Plant residues<br /> C. Green manure crops<br /><br />2. Four different practices that can help to protect against soil erosion are:<br /> A. Terracing<br /> B. Contour plowing<br /> C. Agroforestry<br /> D. Crop rotation