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JNAN PUBLICATION-HUMAN FOOD AND FOOD PRODUCTION-EXAMPLE
- What is ploughing?
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- How is Hoe used?
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- What is used nowadays to plough large tracts land?
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- What is used nowadays to plough small agricultural land?
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- How is seed drill used?
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- Why the farmers dip the seeds in chemicals before sowing?
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- What are plant nutrients?
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- How many types of manure and fertilisers are there?
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- How organic manure is produced?
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- Cultivation of which crop increases nitrogen in soil ?
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- What is crop rotation?
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- Write name of some common weeds.
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- What are two ways to control the pests?
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- What type of chemicals are used to control rats?
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- Which chemicals control the insects?
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- Name some natural predators of some pests.
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- What is threshing?
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- Presently which gas is used in granaries?
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- Which is the major food crop of India?
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- What is the nutritive value of rice?
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