61. Common indicator organisms of water pollution is
62. What percentage of solar energy/radiation is used in photosynthesis?
63. Environmental studies are very important for
64. Increased arthmatic attacks in certain seasons are related to
65. The circulation or cycling of elements in an ecosystem is known as
66. Complete the following
Organisms ⟶ Populations ⟶ Communities ⟶ . . . . . . . . Ecosphere.
Organisms ⟶ Populations ⟶ Communities ⟶ . . . . . . . . Ecosphere.
67. Which one of the following is matching sanctuary?
68. Major source of biologically significant sulphur is
69. Animals and plants are best protected in
70. Product moment coefficient of correlation measures which particular type of relationship between two variables?
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