Environmental Science
Low clouds retard surface cooling at night better than clear skies because:

The clouds are better conductors of heat than is the clear night air
The clouds start convection currents between them
The water droplets in the clouds reflect infrared energy back to earth
The formation of the clouds releases latent heat energy
The clouds absorb and radiate infrared energy back to earth

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Environmental Science
The order of succession in a hydrosere is

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

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