Environmental Science
The primary cause of a radiation inversion is:

Solar radiation reflected by the earth's surface
Infrared radiation absorbed by the earth's surface
Infrared radiation emitted by the earth's surface
Infrared radiation absorbed by the atmosphere and clouds
Solar radiation absorbed by the earth's surface

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Environmental Science
During the winter solstice in the Northern Hemisphere:

All of these
The noon sun is overhead at 23.5o S latitude
Astronomical winter begins in the Northern Hemisphere
At middle latitudes in the Northern Hemisphere, this marks the longest night of the year

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Environmental Science
When a liquid thermometer is held in direct sunlight,

It will measure a much higher temperature than that of the air
It will accurately measure the air temperature
It will measure a much lower temperature than that of the air
It will measure the temperature of the sun rather than the air

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