Environmental Science
What is "temporary threshold shift"?

Hearing loss due to excessive noise
inaudible noise
Noise that is untolerable
Tolerable noise

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Environmental Science
During the winter solstice in the Northern Hemisphere:

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

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