41. A waste is classified as hazardous if it shows
42. Which of the following is the green house gas?
43. The symptoms of a goitre include
44. Bandipur (Karnataka) National Park is site of
45. Annual world precipitation is
46. Source of carbon to plants is
47. Which of the following is only source of energy which keeps natural ecosystems in a actual state?
48. National Land Resources Conservation week observed on
49. Biotic community can be grouped into
50. Soil is the
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