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Science

9th

grade

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improvement in crop production

3
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8 questions

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  • 1. Open Ended
    3 minutes
    3 pts

    Compare the use of manure and fertilizer in maintaining soil fertlity.

  • 2. Open Ended
    3 minutes
    3 pts

    Compare the use insecticide, pesticide and biological control methods in protecting crops

    Why should preventive measures and biological control methods be preferred for protecting crops?

  • 3. Open Ended
    3 minutes
    3 pts

    Which methods is commonly used for improving cattle breeds and why

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