41. Which tree is known as Coral tree?
42. The components of LPG are _____________
43. Biogas is composed of
44. _________ mixed with diesel reduces carbon monoxide emissions up to 50%.
45. Fungi is/are
46. In an aquatic ecosystem, the depth to which light penetrates is called
47. Algal bloom results in
48. The maximum in daytime surface temperature typically occurs _______ the earth receives its most intense solar radiation.
49. The resources that can be replaced by natural ecological cycle is called
50. The portion of the earth and its environment which can support life is known as _________
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