61. Which of the following processes acts to remove carbon dioxide from the atmosphere?
62. All food chains starts with __________ and ends with decay.
63. The biosphere encompasses the total __________ of living material in a region or the globe.
64. Meteorology is considered a branch of:
65. Study of inter-relationship between organisms and their environment is
66. In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is
67. The order of succession in a hydrosere is
68. The species of plants that play a vital role in controlling the relative abundance of other species in a community are called
69. The historical monument that is affected by acid rain is
70. Good urban planning is essential for __________ land use.
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