A farmer in a semi-arid area claims that his farming practice is very environment friendly. Which of the following practices on his farm can justify his claim ?1. Planting a tree belt.2. Practising crop rotation.3. Carrying out a large scale irrigation system.4. Using organic fertilizers. Select the correct answer using the code given below :

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A farmer in a semi-arid area claims that his farming practice is very environment friendly. Which of the following practices on his farm can justify his claim ?<br />1. Planting a tree belt.<br />2. Practising crop rotation.<br />3. Carrying out a large scale irrigation system.<br />4. Using organic fertilizers. Select the correct answer using the code given below :






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