Environmental Science
During the afternoon the greatest temperature difference between the surface air and the air several meters above occurs on a:

Cloudy, calm afternoon
Cloudy, windy afternoon
Clear, windy afternoon
Clear, calm afternoon

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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
The total energy flow at successive tropical level always decreases
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

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Environmental Science
Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

Some of the sun's energy is reflected by snow and ice in the northern latitudes
Increased cloud cover reflects solar energy in the northern latitudes
All of these
Solar energy is used to melt frozen soil in the northern latitudes
Solar energy is spread over a larger area in northern latitudes

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