Environmental Science
The order of succession in a hydrosere is

phytoplankton->Rooted aquatic plants->Free floating stage->Reed swamp stage-> wood land stage-> Sedge Meadow stage-> Climax forest
Rooted aquatic plants-> phytoplankton->Free floating stage->Reed swamp stage->Sedge Meadow stage-> wood land stage-> Climax forest
Rooted aquatic plants-> phytoplankton->Free floating stage-> Sedge Meadow stage-> Reed swamp stage-> wood land stage-> Climax forest
phytoplankton->Rooted aquatic plants->Free floating stage->Reed swamp stage->Sedge Meadow stage-> wood land stage-> Climax forest

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Environmental Science
The lag in daily temperature refers to the time lag between the:

Time of maximum solar radiation and the time of maximum temperature
Sunrise and sunset
Minimum and maximum temperature for a day
Minimum and maximum solar energy received at the surface for a given day
Time of minimum temperature and the time of maximum solar radiation

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