Environmental Science
During the winter solstice in the Northern Hemisphere:

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

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Environmental Science
Our seasons are caused by:

The changing distance between the earth and the sun
Only (b) and (c) are correct
The angle at which sunlight reaches the earth
The length of the daylight hours
All of these

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