Environmental Science
Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?

It is inverted in shape
It shows energy content of different trophic level organisms
It is upright in shape
Its base is broad

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Environmental Science
Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Concentration of earth's magnetic field lines at the poles
Conduction of heat through the interior of the earth
Release of latent heat to the atmosphere when polar ice melts
The insulating properties of snow
Circulation of heat by the atmosphere and oceans

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