Correct Answer: Option B

Explanation

 Crop Rotation: This is the growing of different crops on a piece of land, year after year in a planned sequence. It facilitates efficient and economic use of land from year to year and also helps to reduce the risk of serious disease and pest infestation.

• A uniform rod 8m long weighing 5kg is supported horizontally by two vertical parallel strings at P and Q and... Answer this

  1 Answers   ·   Physics   ·   4 hours ago
• A uniform rod 8m long weighing 5kg is supported horizontally by two vertical parallel strings at P and Q and... Answer this

  6 Answers   ·   Physics   ·   3 years ago
• If r is radius of the earth and g is acceleration at its surface, then the acceleration g at an... Answer this

  3 Answers   ·   Physics   ·   9 years ago