Environmental Science
Which of the following gases are mainly responsible for the atmospheric greenhouse effect in the earth's atmosphere?

Ozone and oxygen
Oxygen and nitrogen
Water vapor and carbon dioxide
Nitrogen and carbon dioxide

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Environmental Science
The order of basic processes involved in succession is

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

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