সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
Farmers can keep their soil fertile by--
Farmers can keep their soil fertile by--
- ক. Crop rotation
- খ. Regular tilling
- গ. Repeatedly growing the same crop
- ঘ. Irrigation
সঠিক উত্তরঃ Crop rotation
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Basic Information of Daily Science, Inventions and...