Environmental Science
The 3 R principle in waste management involves

Reduce, Regain, Reuse
Reduce, Reform, Reset
Reduce, Reuse, Recycle
Reduce, Retain, Regain

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Environmental Science
Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

Increase as the air becomes drier
Increase as the air becomes moister
Decrease as the air becomes moister
Decrease as the air becomes drier

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