41. The instrument, which is used for sowing of seed with fertilizer together at a time, is
42. The main atmospheric layer near the surface of earth is
43. The main function of NABARD is
44. The newspaper contains one of the following toxic material
45. The pH in soils can be raised by adding:
46. The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil
47. The word Agriculture is derived from
48. The worst enemy of ozone is
49. Thermal pollution is more common near
50. Tissue culture is a good technique to
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