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B
A and C only
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C
B and C only
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D
B and D only
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E
A, B and C only
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Solution
The correct option is C B and C only The nitrogen cycle is a gaseous biogeochemical cycle and pyramid of biomass is inverted in aquatic food chains, where the primary producers are phytoplanktons.
Secondary succession is biotic succession on secondarily bare area e.g., an area devastated by forest fire or deforestation.
Pioneer community refers to the first biotic community in a bare area. Plants that are first to invade the bare area are called as pioneer species, e.g., lichens (succession on rocks).