Environmental Science
Suppose saturated polar air has an air temperature and dew point of -10o C, and unsaturated desert air has an air temperature of 35o C and a dew point of 10o C. The desert air contains ______ water vapour and has a ________ relative humidity than the polar air.

Less, lower
More, lower
Less, higher
More, higher

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

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

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