Environmental Science
Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:

The thermometer was in error
The thermometer was read incorrectly
The newspaper reported the wrong temperature
The thermometer was read before the minimum temperature was reached for that day
Temperature readings are taken in instrument shelters more than 5 feet above the ground

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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
The total energy flow at successive tropical level always decreases
In most ecosystems, the pyramid of numbers and biomass are up right

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