Environmental Science
Thermal belts are:

Cold, below-freezing air found at the top of a mountain
Pockets of cold air resting on a valley floor at night
Warmer hillsides that are less likely to experience freezing conditions
Pockets of warm air resting on a valley during the afternoon

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

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

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