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Which of the following is not a use of micro-organisms ? (a) preparation of medicines (or drugas) (b) preparation of food by photosynthesis (c) recycling of materials in nature (d) increasing the fertility of soil |
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Answer» Which of the following is not a use of micro-organisms ? (a) preparation of medicines (or drugas) (b) preparation of food by photosynthesis (c) recycling of materials in nature (d) increasing the fertility of soil |
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