Environmental Science
The concept that 'population tends to increase geometrically while food supply increases arithmetically' was put forward by

Adam Smith
Charles Darwin
Thomas Malthus
Stuart Mill

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Environmental Science
The order of succession in a lithosere or xerosere is

Crustose lichen stage->Foilose lichen stage->moss stage-> ->shrub stage-> herb stage->forest stage (climax community)
Crustose lichen stage->Foilose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)
Moss stage ->Foilose lichen stage-> Crustose lichen stage ->herb stage->shrub stage->forest stage (climax community)
Foliose lichen stage->Crustose lichen stage->moss stage->herb stage>shrub stage->forest stage (climax community)

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Environmental Science
The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating?

Absorption of infrared energy that has been radiated from the surface
Heat energy from the earth's interior
Convection from a hot surface
Conduction of heat upward from a hot surface

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