What am i riddle

Invisible Measurement
Riddle:
I can be measured, but never seen. What am I?
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Today Before Tomorrow
Riddle:
I'm a rare case where today comes before yesterday. What am I?
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Shave Every Day
Riddle:
I can shave every day, but my beard will stay the same. What am I?
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What is...
Riddle:
I'm greater than God, more evil than the devil, the poor have me, the rich need me, and if you eat me, you'll die. What Am I?
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The Unknown traveler
Riddle:
I can travel around the world while staying in a corner. What Am I?
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