Q1. Briefly describe three natural methods of replenishing the nutrients of the soil. Q2. If soil has all the nutrients, why do we need to replenish it?Q3. Crop rotation has helped the farmers to increase the crop yield . Comment on this statement.Q4. A farmer leaves his field uncultivated for a few months. State the significance of this practice .Q5. Compare and contrast: a) Manure and fertilizers b) Crop Rotation and Field FallowQ6. Choose the correct option.A)The system of irrigation where in water is supplied drop by drop near the roots of plants, is called(a) pulley system (b) drip system (c) sprinkler system (d) lever systemB)Which of the following is not the traditional method of irrigation?a)Sprinkler system b) Moat c) Drip irrigation Q7. Drip irrigation saves wastage of water because it supplies water directly to the roots. Why is drip irrigation not used by all the farmers?Q8. What method of irrigation will you use if you live in a dry area with shortage of water? Explain the method.​