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| 1. |
What is the use of biochar in farming? 1. Biochar can be used as a part of the growing medium in vertical farming. 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen fixing microorganisms. 3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time. Which of the statements given above is/ are correct? |
| A. | 1 and 2 only |
| B. | 2 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» E. | |