Environmental Science
The atmospheric greenhouse effect is produced mainly by the:

Absorption and re-emission of visible light by the ground
Absorption and re-emission of visible light by the atmosphere
Absorption and re-emission of visible light by clouds
Absorption and re-emission of ultraviolet radiation by the atmosphere
Absorption and re-emission of infrared radiation by the atmosphere

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Environmental Science
Which of the following regarding ecological pyramids is not correct?

In deep water ecosystem, the pyramid of biomass is upright
In tree dominated ecosystem the pyramid of numbers is inverted
In most ecosystems, the pyramid of numbers and biomass are up right
The pyramid of energy expresses mainly the rate of food production
The total energy flow at successive tropical level always decreases

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