Environmental Science
Abyssal zone in ocean has

sunlight and producers
sunlight and decomposers
no sunlight but contain producers
no sunlight but contains decomposers and consumers

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Environmental Science
The order of basic processes involved in succession is

Invasion->stabilization-> competition and co action->Reaction>nudation
Nudation->Invasion-> competition and co action->reaction>stabilization
Nudation->stabilization-> competition and co action->Invasion>reaction
Invasion-> Nudation->competition and co action->Reaction>stabilization

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